Palettes / Colors / #28100B

#28100B — Dark Red

#28100B is a red color we call Dark Red, closest to the named color Black (#000000). It belongs to the red family.

Color name

Closest CSS keyword: black (#000000) — not an exact match. CSS black gives you #000000, a different color; use #28100B when you need this exact shade.

Sources: common names follow widely used color-name references; CSS keywords and their hex values follow the CSS Color specification.

#28100B is a warm red color associated with energy, passion and urgency. It is deep enough for text, outlines and dark interface surfaces, and makes light colors glow next to it.

Its strongest partner is its complement #0B2328; it also sits naturally between #280B15 and #281E0B. In the palettes below you can see it working alongside real color combinations from our collection.

Copy HEX Copy RGB Copy HSL Download PNG swatch SVG

Color values

RGB & CMYK percentages

Red 16% · Green 6% · Blue 4%

Cyan 0% · Magenta 60% · Yellow 73% · Key 84%

CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.

Previews

CSS code for #28100B

.text { color: #28100B; }
.background { background-color: #28100B; }
.border { border: 3px solid #28100B; }
.text-rgb { color: rgb(40, 16, 11); }
.text-hsl { color: hsl(10, 57%, 10%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #28100B; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(40, 16, 11, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #28100B; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(40, 16, 11, 0.8); }

HTML: <p style="color:#28100B">Text here</p> · <div style="background-color:#28100B">Div content here</div>

Shades of #28100B

Tints of #28100B

Tones of #28100B

Color harmonies

Complementary — #0B2328:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #28100B: #FFFFFF.

Semi-transparent (opacity) text on #28100B

Text set with opacity blends into the background, so its real contrast is lower than the solid ratios above. Choose a text color and an opacity to see the blended color and its true ratio:

How #28100B looks with color blindness

Simulated with standard Machado color-vision-deficiency matrices — useful when this color carries meaning in charts, maps or interfaces:

Closest design-system colors

The nearest matches in the Tailwind CSS, Material Design and Bootstrap palettes — handy when you need a framework class instead of a raw hex:

Palettes with a similar color

These palettes use a close neighbour of #28100B rather than the exact color:

Similar colors

The closest colors that actually appear in our palette collection — click any to open its page:

Browse neighbouring colors

← #28100A  ·  #28100C →

Frequently asked questions

What color is #28100B?

#28100B is Dark Red, a red color (RGB 40, 16, 11). Its closest standard named color is Black.

What is the RGB and HSL of #28100B?

#28100B is RGB 40, 16, 11 — HSL 10°, 57%, 10% — CMYK 0%, 60%, 73%, 84%.

What colors go with #28100B?

Its complement is #0B2328; analogous partners are #280B15 and #281E0B. It also appears in 6+ palettes in our collection.

Can I use #28100B for text?

White text on #28100B has a contrast ratio of 17.96:1 (passes WCAG AA); black text gives 1.17:1.