#81001B
Closest named color: Wine Red (#7B0323). oklch(38.1% 0.153 21), rgb(129, 0, 27).
Aa
White text reads best on this color (10.77:1).
About this color
#81001B is a dark, vivid red. In OKLCH its lightness is 38%, its chroma 0.153 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Wine Red (#7B0323), ΔE 0.017 away. White text reads best on it, at 10.77:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | vivid (0.153) |
| Temperature | warm |
| Nearest name | Wine Red (#7B0323) |
| Black text | 1.94:1 |
| White text | 10.77:1 |
Values
| HEX | #81001B |
| RGB | rgb(129, 0, 27) |
| HSL | hsl(347, 100%, 25%) |
| OKLCH | oklch(38.1% 0.153 21) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #81001B | 10.77:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #81001B | 1.94:1 | Fails | Lc 11.3 | Not readable |
| #81001B text on white | 10.77:1 | AAA | Lc 92.6 | Preferred for body text |
| #81001B text on black | 1.94:1 | Fails | Lc -9.8 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FFE2E1
oklch(93.6% 0.032 20.1)
-
Step 200
200
#FFCAC8
oklch(88.5% 0.061 20.9)
-
Step 300
300
#FFA4A2
oklch(80.9% 0.108 21.1)
-
Step 400
400
#FE686D
oklch(70.7% 0.183 21.1)
-
Step 500
500
#F72846
oklch(63% 0.235 21)
-
Step 600
600
#D70034
oklch(55.6% 0.223 21)
-
Step 700
700
#B6002A
oklch(49.1% 0.197 21.1)
-
Step 800
800
#970021
oklch(42.7% 0.172 21.2)
-
Step 900
900 (this color)
#81001B
oklch(38.1% 0.153 21)
-
Step 950
950
#4B0810
oklch(26.9% 0.097 21)
#81001B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #312D1B | 0.172 |
| Deuteranopia (no green cones) | #4F4616 | 0.154 |
| Tritanopia (no blue cones) | #8F000E | 0.034 |
| Achromatopsia (no color) | #3E3E3E | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81001B
#81001B
oklch(38.1% 0.153 21)
- #004D51
#004D51
oklch(38.2% 0.065 200.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #81001B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Wine Red #7B0323 ΔE 0.017
- Maroon #800000 ΔE 0.022
- Bordeaux #7B002C ΔE 0.028
- Dark Red #8B0000 ΔE 0.031
- Blood #770001 ΔE 0.032
- Red Wine #8C0034 ΔE 0.041
- Brick Red #8F1402 ΔE 0.046
- Reddy Brown #6E1005 ΔE 0.048
Use #81001B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.