#731F10
Closest named color: Chestnut (#742802). oklch(37.4% 0.12 32.5), rgb(115, 31, 16).
Aa
White text reads best on this color (10.86:1).
About this color
#731F10 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.120 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.023 away. White text reads best on it, at 10.86:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.120) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.93:1 |
| White text | 10.86:1 |
Values
| HEX | #731F10 |
| RGB | rgb(115, 31, 16) |
| HSL | hsl(9, 76%, 26%) |
| OKLCH | oklch(37.4% 0.12 32.5) |
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 #731F10 | 10.86:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #731F10 | 1.93:1 | Fails | Lc 9.8 | Not readable |
| #731F10 text on white | 10.86:1 | AAA | Lc 94.1 | Preferred for body text |
| #731F10 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F8CEC5
oklch(88.5% 0.049 32.1)
-
Step 300
300
#F5AB9C
oklch(80.8% 0.09 31.8)
-
Step 400
400
#EC7B65
oklch(70.6% 0.144 32.3)
-
Step 500
500
#E35339
oklch(63.2% 0.184 32.4)
-
Step 600
600
#CE2E0E
oklch(55.6% 0.2 32.5)
-
Step 700
700
#B11F00
oklch(49.1% 0.184 32.4)
-
Step 800
800
#901D06
oklch(42.6% 0.153 32.6)
-
Step 900
900 (this color)
#731F10
oklch(37.4% 0.12 32.5)
-
Step 950
950
#44140C
oklch(26.9% 0.076 31.8)
#731F10 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) | #38310D | 0.126 |
| Deuteranopia (no green cones) | #4D440C | 0.114 |
| Tritanopia (no blue cones) | #7F001C | 0.043 |
| Achromatopsia (no color) | #3D3D3D | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #731F10
#731F10
oklch(37.4% 0.12 32.5)
- #004955
#004955
oklch(37.3% 0.065 213.2)
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 #731F10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.023
- Reddy Brown #6E1005 ΔE 0.027
- Blood #770001 ΔE 0.032
- Maroon #800000 ΔE 0.035
- Wine Red #7B0323 ΔE 0.045
- Dark Red #8B0000 ΔE 0.052
- Claret #680018 ΔE 0.056
- Bordeaux #7B002C ΔE 0.057
Use #731F10 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.