#731C03
Closest named color: Chestnut (#742802). oklch(36.9% 0.125 35.3), rgb(115, 28, 3).
Aa
White text reads best on this color (11.07:1).
About this color
#731C03 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.125 and its hue 35°. 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 11.07:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.125) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.89:1 |
| White text | 11.07:1 |
Values
| HEX | #731C03 |
| RGB | rgb(115, 28, 3) |
| HSL | hsl(13, 95%, 23%) |
| OKLCH | oklch(36.9% 0.125 35.3) |
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 #731C03 | 11.07:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #731C03 | 1.89:1 | Fails | Lc 9.5 | Not readable |
| #731C03 text on white | 11.07:1 | AAA | Lc 94.4 | Preferred for body text |
| #731C03 text on black | 1.89:1 | Fails | Lc -8.2 | 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
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FBE4DE
oklch(93.6% 0.027 35)
-
Step 200
200
#F9CEC2
oklch(88.5% 0.052 36.1)
-
Step 300
300
#F6AB97
oklch(80.8% 0.093 35.5)
-
Step 400
400
#EE7A5D
oklch(70.6% 0.15 35.1)
-
Step 500
500
#E55029
oklch(63% 0.192 35.3)
-
Step 600
600
#CB3500
oklch(55.6% 0.193 35.4)
-
Step 700
700
#AC2B00
oklch(49.1% 0.171 35.3)
-
Step 800
800
#8E2200
oklch(42.7% 0.148 35.4)
-
Step 900
900 (this color)
#731C03
oklch(36.9% 0.125 35.3)
-
Step 950
950
#451407
oklch(27% 0.079 35.8)
#731C03 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) | #372F00 | 0.130 |
| Deuteranopia (no green cones) | #4C4300 | 0.117 |
| Tritanopia (no blue cones) | #800018 | 0.043 |
| Achromatopsia (no color) | #3C3C3C | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #731C03
#731C03
oklch(36.9% 0.125 35.3)
- #004855
#004855
oklch(37% 0.065 214.9)
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 #731C03, 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 0.024
- Blood #770001 ΔE 0.029
- Maroon #800000 ΔE 0.034
- Wine Red #7B0323 ΔE 0.049
- Dark Red #8B0000 ΔE 0.052
- Claret #680018 ΔE 0.056
- Brick Red #8F1402 ΔE 0.060
Use #731C03 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.