#731D00
Closest named color: Chestnut (#742802). oklch(37% 0.125 36.7), rgb(115, 29, 0).
Aa
White text reads best on this color (11.02:1).
About this color
#731D00 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.125 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.021 away. White text reads best on it, at 11.02:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.125) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.90:1 |
| White text | 11.02:1 |
Values
| HEX | #731D00 |
| RGB | rgb(115, 29, 0) |
| HSL | hsl(15, 100%, 23%) |
| OKLCH | oklch(37% 0.125 36.7) |
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 #731D00 | 11.02:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #731D00 | 1.90:1 | Fails | Lc 9.6 | Not readable |
| #731D00 text on white | 11.02:1 | AAA | Lc 94.3 | Preferred for body text |
| #731D00 text on black | 1.90:1 | 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
#FBE4DD
oklch(93.6% 0.027 37.6)
-
Step 200
200
#F9CEC1
oklch(88.5% 0.052 37.5)
-
Step 300
300
#F6AB96
oklch(80.8% 0.094 36.3)
-
Step 400
400
#EE7B5A
oklch(70.7% 0.15 36.9)
-
Step 500
500
#E55224
oklch(63.2% 0.191 36.8)
-
Step 600
600
#C93A00
oklch(55.7% 0.187 36.8)
-
Step 700
700
#AA2F00
oklch(49.1% 0.166 36.6)
-
Step 800
800
#8C2500
oklch(42.6% 0.144 36.6)
-
Step 900
900 (this color)
#731D00
oklch(37% 0.125 36.7)
-
Step 950
950
#451406
oklch(27% 0.079 36.6)
#731D00 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) | #383000 | 0.127 |
| Deuteranopia (no green cones) | #4D4300 | 0.114 |
| Tritanopia (no blue cones) | #800018 | 0.045 |
| Achromatopsia (no color) | #3C3C3C | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #731D00
#731D00
oklch(37% 0.125 36.7)
- #004856
#004856
oklch(37% 0.066 216.3)
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 #731D00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.021
- Reddy Brown #6E1005 ΔE 0.026
- Blood #770001 ΔE 0.031
- Maroon #800000 ΔE 0.036
- Wine Red #7B0323 ΔE 0.052
- Dark Red #8B0000 ΔE 0.053
- Claret #680018 ΔE 0.059
- Brick Red #8F1402 ΔE 0.060
Use #731D00 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.