#731800
Closest named color: Reddy Brown (#6E1005). oklch(36.5% 0.129 34.7), rgb(115, 24, 0).
Aa
White text reads best on this color (11.29:1).
About this color
#731800 is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.129 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.019 away. White text reads best on it, at 11.29:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.129) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.85:1 |
| White text | 11.29:1 |
Values
| HEX | #731800 |
| RGB | rgb(115, 24, 0) |
| HSL | hsl(13, 100%, 23%) |
| OKLCH | oklch(36.5% 0.129 34.7) |
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 #731800 | 11.29:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #731800 | 1.85:1 | Fails | Lc 9.2 | Not readable |
| #731800 text on white | 11.29:1 | AAA | Lc 94.7 | Preferred for body text |
| #731800 text on black | 1.85:1 | Fails | Lc -7.9 | 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
#FCE4DE
oklch(93.7% 0.028 34.3)
-
Step 200
200
#FACDC2
oklch(88.4% 0.053 34)
-
Step 300
300
#F8AA97
oklch(80.9% 0.097 34.3)
-
Step 400
400
#F1785B
oklch(70.7% 0.155 34.7)
-
Step 500
500
#E84D27
oklch(63.1% 0.198 34.6)
-
Step 600
600
#CC3200
oklch(55.5% 0.196 34.7)
-
Step 700
700
#AD2900
oklch(49.1% 0.173 34.7)
-
Step 800
800
#8F2000
oklch(42.7% 0.151 34.7)
-
Step 900
900 (this color)
#731800
oklch(36.5% 0.129 34.7)
-
Step 950
950
#461307
oklch(27% 0.081 34.7)
#731800 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) | #352E00 | 0.135 |
| Deuteranopia (no green cones) | #4B4200 | 0.121 |
| Tritanopia (no blue cones) | #800014 | 0.038 |
| Achromatopsia (no color) | #3A3A3A | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #731800
#731800
oklch(36.5% 0.129 34.7)
- #004753
#004753
oklch(36.6% 0.064 213.6)
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 #731800, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.019
- Blood #770001 ΔE 0.024
- Chestnut #742802 ΔE 0.029
- Maroon #800000 ΔE 0.031
- Wine Red #7B0323 ΔE 0.047
- Dark Red #8B0000 ΔE 0.052
- Claret #680018 ΔE 0.052
- Bordeaux #7B002C ΔE 0.060
Use #731800 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.