#731F05
Closest named color: Chestnut (#742802). oklch(37.3% 0.122 36.1), rgb(115, 31, 5).
Aa
White text reads best on this color (10.89:1).
About this color
#731F05 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.122 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.019 away. White text reads best on it, at 10.89:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.122) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.92:1 |
| White text | 10.89:1 |
Values
| HEX | #731F05 |
| RGB | rgb(115, 31, 5) |
| HSL | hsl(14, 92%, 24%) |
| OKLCH | oklch(37.3% 0.122 36.1) |
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 #731F05 | 10.89:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #731F05 | 1.92:1 | Fails | Lc 9.8 | Not readable |
| #731F05 text on white | 10.89:1 | AAA | Lc 94.2 | Preferred for body text |
| #731F05 text on black | 1.92:1 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FBE4DE
oklch(93.6% 0.027 35)
-
Step 200
200
#F9CEC2
oklch(88.5% 0.052 36.1)
-
Step 300
300
#F5AC98
oklch(80.9% 0.091 35.9)
-
Step 400
400
#ED7C5D
oklch(70.8% 0.147 36.3)
-
Step 500
500
#E3532A
oklch(63% 0.187 36.1)
-
Step 600
600
#CA3700
oklch(55.6% 0.191 36)
-
Step 700
700
#AB2D00
oklch(49.1% 0.169 35.9)
-
Step 800
800
#8D2400
oklch(42.7% 0.146 36.1)
-
Step 900
900 (this color)
#731F05
oklch(37.3% 0.122 36.1)
-
Step 950
950
#451508
oklch(27.1% 0.077 35.9)
#731F05 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) | #383101 | 0.127 |
| Deuteranopia (no green cones) | #4D4400 | 0.114 |
| Tritanopia (no blue cones) | #7F001B | 0.047 |
| Achromatopsia (no color) | #3D3D3D | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #731F05
#731F05
oklch(37.3% 0.122 36.1)
- #004957
#004957
oklch(37.3% 0.066 216.1)
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 #731F05, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.019
- Reddy Brown #6E1005 ΔE 0.028
- Blood #770001 ΔE 0.033
- Maroon #800000 ΔE 0.037
- Wine Red #7B0323 ΔE 0.051
- Dark Red #8B0000 ΔE 0.053
- Brick Red #8F1402 ΔE 0.059
- Claret #680018 ΔE 0.060
Use #731F05 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.