#731D05
Closest named color: Chestnut (#742802). oklch(37.1% 0.124 35.2), rgb(115, 29, 5).
Aa
White text reads best on this color (11.01:1).
About this color
#731D05 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.124 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.022 away. White text reads best on it, at 11.01:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.124) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.90:1 |
| White text | 11.01:1 |
Values
| HEX | #731D05 |
| RGB | rgb(115, 29, 5) |
| HSL | hsl(13, 92%, 24%) |
| OKLCH | oklch(37.1% 0.124 35.2) |
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 #731D05 | 11.01:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #731D05 | 1.90:1 | Fails | Lc 9.6 | Not readable |
| #731D05 text on white | 11.01:1 | AAA | Lc 94.3 | Preferred for body text |
| #731D05 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
#FBE4DE
oklch(93.6% 0.027 35)
-
Step 200
200
#F9CEC2
oklch(88.5% 0.052 36.1)
-
Step 300
300
#F6AB98
oklch(80.8% 0.093 34.8)
-
Step 400
400
#EE7B5E
oklch(70.8% 0.148 35.2)
-
Step 500
500
#E5512C
oklch(63.1% 0.19 34.9)
-
Step 600
600
#CC3400
oklch(55.7% 0.195 35.1)
-
Step 700
700
#AC2A00
oklch(49% 0.172 35)
-
Step 800
800
#8E2100
oklch(42.6% 0.149 35.1)
-
Step 900
900 (this color)
#731D05
oklch(37.1% 0.124 35.2)
-
Step 950
950
#451408
oklch(27% 0.078 35)
#731D05 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) | #373001 | 0.129 |
| Deuteranopia (no green cones) | #4C4300 | 0.117 |
| Tritanopia (no blue cones) | #7F0019 | 0.043 |
| Achromatopsia (no color) | #3C3C3C | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #731D05
#731D05
oklch(37.1% 0.124 35.2)
- #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 #731D05, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.022
- Reddy Brown #6E1005 ΔE 0.025
- Blood #770001 ΔE 0.030
- Maroon #800000 ΔE 0.034
- Wine Red #7B0323 ΔE 0.049
- Dark Red #8B0000 ΔE 0.052
- Claret #680018 ΔE 0.057
- Brick Red #8F1402 ΔE 0.059
Use #731D05 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.