#731E1B
Closest named color: Reddy Brown (#6E1005). oklch(37.4% 0.119 26.7), rgb(115, 30, 27).
Aa
White text reads best on this color (10.87:1).
About this color
#731E1B is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.119 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.029 away. White text reads best on it, at 10.87:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.119) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.93:1 |
| White text | 10.87:1 |
Values
| HEX | #731E1B |
| RGB | rgb(115, 30, 27) |
| HSL | hsl(2, 62%, 28%) |
| OKLCH | oklch(37.4% 0.119 26.7) |
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 #731E1B | 10.87:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #731E1B | 1.93:1 | Fails | Lc 9.8 | Not readable |
| #731E1B text on white | 10.87:1 | AAA | Lc 94.2 | Preferred for body text |
| #731E1B text on black | 1.93:1 | Fails | Lc -8.4 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F9CDC8
oklch(88.5% 0.05 25.7)
-
Step 300
300
#F5ABA2
oklch(81% 0.089 26.9)
-
Step 400
400
#EC7A6F
oklch(70.7% 0.143 27)
-
Step 500
500
#E35149
oklch(63.2% 0.183 26.8)
-
Step 600
600
#CE2B2B
oklch(55.6% 0.199 26.6)
-
Step 700
700
#B21A1E
oklch(49.1% 0.185 26.6)
-
Step 800
800
#901B1B
oklch(42.6% 0.152 26.6)
-
Step 900
900 (this color)
#731E1B
oklch(37.4% 0.119 26.7)
-
Step 950
950
#441411
oklch(26.9% 0.075 26.9)
#731E1B 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) | #36311A | 0.128 |
| Deuteranopia (no green cones) | #4C4418 | 0.117 |
| Tritanopia (no blue cones) | #7F011E | 0.036 |
| Achromatopsia (no color) | #3D3D3D | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #731E1B
#731E1B
oklch(37.4% 0.119 26.7)
- #004A52
#004A52
oklch(37.4% 0.064 207.2)
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 #731E1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.029
- Blood #770001 ΔE 0.032
- Chestnut #742802 ΔE 0.033
- Wine Red #7B0323 ΔE 0.036
- Maroon #800000 ΔE 0.036
- Bordeaux #7B002C ΔE 0.047
- Claret #680018 ΔE 0.051
- Dark Red #8B0000 ΔE 0.052
Use #731E1B 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.