#831821
Closest named color: Dark Red (#8B0000). oklch(40% 0.141 22.6), rgb(131, 24, 33).
Aa
White text reads best on this color (9.91:1).
About this color
#831821 is a dark, vivid red. In OKLCH its lightness is 40%, its chroma 0.141 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Red (#8B0000), ΔE 0.029 away. White text reads best on it, at 9.91:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | vivid (0.141) |
| Temperature | warm |
| Nearest name | Dark Red (#8B0000) |
| Black text | 2.11:1 |
| White text | 9.91:1 |
Values
| HEX | #831821 |
| RGB | rgb(131, 24, 33) |
| HSL | hsl(355, 69%, 30%) |
| OKLCH | oklch(40% 0.141 22.6) |
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 #831821 | 9.91:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #831821 | 2.11:1 | Fails | Lc 12.4 | Not readable |
| #831821 text on white | 9.91:1 | AAA | Lc 91.6 | Preferred for body text |
| #831821 text on black | 2.11:1 | Fails | Lc -10.8 | 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
#FEE2E0
oklch(93.5% 0.031 22.6)
-
Step 200
200
#FECBC7
oklch(88.6% 0.058 23.5)
-
Step 300
300
#FEA5A1
oklch(80.9% 0.106 22.5)
-
Step 400
400
#F86F6E
oklch(70.7% 0.169 22.8)
-
Step 500
500
#F03B48
oklch(63.1% 0.216 22.5)
-
Step 600
600
#D8002E
oklch(55.7% 0.225 22.6)
-
Step 700
700
#B60025
oklch(49% 0.198 22.6)
-
Step 800
800
#97001D
oklch(42.7% 0.172 22.6)
-
Step 900
900 (this color)
#831821
oklch(40% 0.141 22.6)
-
Step 950
950
#490D11
oklch(27% 0.089 22.2)
#831821 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) | #393420 | 0.155 |
| Deuteranopia (no green cones) | #544B1D | 0.141 |
| Tritanopia (no blue cones) | #91001D | 0.030 |
| Achromatopsia (no color) | #434343 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #831821
#831821
oklch(40% 0.141 22.6)
- #005258
#005258
oklch(40% 0.068 203.3)
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 #831821, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Red #8B0000 ΔE 0.029
- Maroon #800000 ΔE 0.032
- Wine Red #7B0323 ΔE 0.032
- Brick Red #8F1402 ΔE 0.034
- Red Wine #8C0034 ΔE 0.040
- Bordeaux #7B002C ΔE 0.041
- Blood #770001 ΔE 0.045
- Blood Red #980002 ΔE 0.047
Use #831821 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.