#731510
Closest named color: Reddy Brown (#6E1005). oklch(36.3% 0.129 28.6), rgb(115, 21, 16).
Aa
White text reads best on this color (11.39:1).
About this color
#731510 is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.129 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.016 away. White text reads best on it, at 11.39:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.129) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.84:1 |
| White text | 11.39:1 |
Values
| HEX | #731510 |
| RGB | rgb(115, 21, 16) |
| HSL | hsl(3, 76%, 26%) |
| OKLCH | oklch(36.3% 0.129 28.6) |
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 #731510 | 11.39:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #731510 | 1.84:1 | Fails | Lc 9.0 | Not readable |
| #731510 text on white | 11.39:1 | AAA | Lc 94.9 | Preferred for body text |
| #731510 text on black | 1.84:1 | Fails | Lc -7.7 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3DF
oklch(93.5% 0.028 28.5)
-
Step 200
200
#FBCDC5
oklch(88.6% 0.054 29.6)
-
Step 300
300
#F9A99D
oklch(80.9% 0.097 28.8)
-
Step 400
400
#F27667
oklch(70.7% 0.155 28.6)
-
Step 500
500
#E94A3D
oklch(63.2% 0.198 28.6)
-
Step 600
600
#D41C18
oklch(55.6% 0.215 28.6)
-
Step 700
700
#B70307
oklch(49.1% 0.2 28.6)
-
Step 800
800
#950F0D
oklch(42.7% 0.166 28.5)
-
Step 900
900 (this color)
#731510
oklch(36.3% 0.129 28.6)
-
Step 950
950
#46120D
oklch(27% 0.081 29)
#731510 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) | #332D0E | 0.139 |
| Deuteranopia (no green cones) | #4A410B | 0.125 |
| Tritanopia (no blue cones) | #7F0015 | 0.029 |
| Achromatopsia (no color) | #3A3A3A | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #731510
#731510
oklch(36.3% 0.129 28.6)
- #00474F
#00474F
oklch(36.4% 0.062 207.6)
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 #731510, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.016
- Blood #770001 ΔE 0.019
- Maroon #800000 ΔE 0.029
- Wine Red #7B0323 ΔE 0.034
- Chestnut #742802 ΔE 0.038
- Claret #680018 ΔE 0.042
- Bordeaux #7B002C ΔE 0.047
- Dark Red #8B0000 ΔE 0.051
Use #731510 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.