#811F21
Closest named color: Dark Red (#8B0000). oklch(40.2% 0.133 24.5), rgb(129, 31, 33).
Aa
White text reads best on this color (9.76:1).
About this color
#811F21 is a dark, moderately saturated red. In OKLCH its lightness is 40%, its chroma 0.133 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Red (#8B0000), ΔE 0.034 away. White text reads best on it, at 9.76:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.133) |
| Temperature | warm |
| Nearest name | Dark Red (#8B0000) |
| Black text | 2.15:1 |
| White text | 9.76:1 |
Values
| HEX | #811F21 |
| RGB | rgb(129, 31, 33) |
| HSL | hsl(359, 61%, 31%) |
| OKLCH | oklch(40.2% 0.133 24.5) |
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 #811F21 | 9.76:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #811F21 | 2.15:1 | Fails | Lc 12.5 | Not readable |
| #811F21 text on white | 9.76:1 | AAA | Lc 91.5 | Preferred for body text |
| #811F21 text on black | 2.15:1 | Fails | Lc -10.9 | 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 800.
-
Step 50
50
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F9E4E2
oklch(93.5% 0.023 24.1)
-
Step 200
200
#F5CFCB
oklch(88.6% 0.043 25.1)
-
Step 300
300
#EFAEA8
oklch(81% 0.077 24.9)
-
Step 400
400
#E48079
oklch(70.8% 0.125 24.9)
-
Step 500
500
#D95B57
oklch(63.1% 0.16 24.6)
-
Step 600
600
#C43C3D
oklch(55.6% 0.173 24.4)
-
Step 700
700
#A92D2F
oklch(49.1% 0.16 24.6)
-
Step 800
800 (this color)
#811F21
oklch(40.2% 0.133 24.5)
-
Step 900
900
#6E2625
oklch(37.7% 0.103 24.2)
-
Step 950
950
#411716
oklch(27% 0.066 23.9)
#811F21 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) | #3C3620 | 0.143 |
| Deuteranopia (no green cones) | #544C1E | 0.133 |
| Tritanopia (no blue cones) | #8E0021 | 0.034 |
| Achromatopsia (no color) | #444444 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #811F21
#811F21
oklch(40.2% 0.133 24.5)
- #00535A
#00535A
oklch(40.3% 0.069 204.7)
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 #811F21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Red #8B0000 ΔE 0.034
- Brick Red #8F1402 ΔE 0.035
- Maroon #800000 ΔE 0.036
- Wine Red #7B0323 ΔE 0.039
- Red Brown #8B2E16 ΔE 0.042
- Chestnut #742802 ΔE 0.044
- Red Wine #8C0034 ΔE 0.047
- Bordeaux #7B002C ΔE 0.047
Use #811F21 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.