#73131B
Closest named color: Blood (#770001). oklch(36.3% 0.129 22.8), rgb(115, 19, 27).
Aa
White text reads best on this color (11.42:1).
About this color
#73131B is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.129 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Blood (#770001), ΔE 0.024 away. White text reads best on it, at 11.42:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.129) |
| Temperature | warm |
| Nearest name | Blood (#770001) |
| Black text | 1.83:1 |
| White text | 11.42:1 |
Values
| HEX | #73131B |
| RGB | rgb(115, 19, 27) |
| HSL | hsl(355, 72%, 26%) |
| OKLCH | oklch(36.3% 0.129 22.8) |
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 #73131B | 11.42:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #73131B | 1.83:1 | Fails | Lc 9.0 | Not readable |
| #73131B text on white | 11.42:1 | AAA | Lc 94.9 | Preferred for body text |
| #73131B text on black | 1.83:1 | Fails | Lc -7.7 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FBCCC9
oklch(88.5% 0.054 22.5)
-
Step 300
300
#F9A8A4
oklch(80.9% 0.096 22.5)
-
Step 400
400
#F27472
oklch(70.7% 0.156 22.8)
-
Step 500
500
#E9474E
oklch(63.1% 0.198 22.6)
-
Step 600
600
#D41631
oklch(55.6% 0.215 22.7)
-
Step 700
700
#B70025
oklch(49.2% 0.198 22.7)
-
Step 800
800
#950B1F
oklch(42.7% 0.166 22.8)
-
Step 900
900 (this color)
#73131B
oklch(36.3% 0.129 22.8)
-
Step 950
950
#461113
oklch(26.9% 0.081 22.4)
#73131B 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) | #312D1A | 0.142 |
| Deuteranopia (no green cones) | #494118 | 0.129 |
| Tritanopia (no blue cones) | #7F0017 | 0.026 |
| Achromatopsia (no color) | #3A3A3A | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #73131B
#73131B
oklch(36.3% 0.129 22.8)
- #00474C
#00474C
oklch(36.2% 0.062 202.8)
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 #73131B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blood #770001 ΔE 0.024
- Reddy Brown #6E1005 ΔE 0.024
- Wine Red #7B0323 ΔE 0.024
- Maroon #800000 ΔE 0.033
- Bordeaux #7B002C ΔE 0.035
- Claret #680018 ΔE 0.037
- Chestnut #742802 ΔE 0.048
- Dark Red #8B0000 ΔE 0.053
Use #73131B 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.