#831318
Closest named color: Dark Red (#8B0000). oklch(39.5% 0.146 25.4), rgb(131, 19, 24).
Aa
White text reads best on this color (10.13:1).
About this color
#831318 is a dark, vivid red. In OKLCH its lightness is 39%, its chroma 0.146 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Red (#8B0000), ΔE 0.022 away. White text reads best on it, at 10.13:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | vivid (0.146) |
| Temperature | warm |
| Nearest name | Dark Red (#8B0000) |
| Black text | 2.07:1 |
| White text | 10.13:1 |
Values
| HEX | #831318 |
| RGB | rgb(131, 19, 24) |
| HSL | hsl(357, 75%, 29%) |
| OKLCH | oklch(39.5% 0.146 25.4) |
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 #831318 | 10.13:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #831318 | 2.07:1 | Fails | Lc 12.0 | Not readable |
| #831318 text on white | 10.13:1 | AAA | Lc 91.9 | Preferred for body text |
| #831318 text on black | 2.07:1 | Fails | Lc -10.5 | 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
#FFE2DF
oklch(93.6% 0.032 24.8)
-
Step 200
200
#FFCAC5
oklch(88.4% 0.061 24.6)
-
Step 300
300
#FFA59D
oklch(80.9% 0.108 25.3)
-
Step 400
400
#FB6D66
oklch(70.7% 0.175 25.4)
-
Step 500
500
#F3363B
oklch(63.1% 0.223 25.4)
-
Step 600
600
#D80021
oklch(55.6% 0.225 25.4)
-
Step 700
700
#B7001A
oklch(49.1% 0.199 25.4)
-
Step 800
800
#970014
oklch(42.6% 0.173 25.3)
-
Step 900
900 (this color)
#831318
oklch(39.5% 0.146 25.4)
-
Step 950
950
#4A0C0D
oklch(27.1% 0.092 25.1)
#831318 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) | #383217 | 0.159 |
| Deuteranopia (no green cones) | #534A13 | 0.145 |
| Tritanopia (no blue cones) | #910017 | 0.029 |
| Achromatopsia (no color) | #414141 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #831318
#831318
oklch(39.5% 0.146 25.4)
- #005058
#005058
oklch(39.4% 0.067 206.4)
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 #831318, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Red #8B0000 ΔE 0.022
- Maroon #800000 ΔE 0.023
- Brick Red #8F1402 ΔE 0.031
- Wine Red #7B0323 ΔE 0.032
- Blood #770001 ΔE 0.038
- Bordeaux #7B002C ΔE 0.043
- Blood Red #980002 ΔE 0.045
- Red Wine #8C0034 ΔE 0.045
Use #831318 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.