#731A18
Closest named color: Reddy Brown (#6E1005). oklch(36.9% 0.124 26.7), rgb(115, 26, 24).
Aa
White text reads best on this color (11.11:1).
About this color
#731A18 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.124 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.023 away. White text reads best on it, at 11.11:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.124) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.88:1 |
| White text | 11.11:1 |
Values
| HEX | #731A18 |
| RGB | rgb(115, 26, 24) |
| HSL | hsl(1, 65%, 27%) |
| OKLCH | oklch(36.9% 0.124 26.7) |
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 #731A18 | 11.11:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #731A18 | 1.88:1 | Fails | Lc 9.4 | Not readable |
| #731A18 text on white | 11.11:1 | AAA | Lc 94.5 | Preferred for body text |
| #731A18 text on black | 1.88:1 | Fails | Lc -8.1 | 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
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#FACDC7
oklch(88.6% 0.052 27)
-
Step 300
300
#F7AAA1
oklch(81% 0.092 26.7)
-
Step 400
400
#EF786D
oklch(70.7% 0.149 26.9)
-
Step 500
500
#E54D46
oklch(63% 0.189 26.7)
-
Step 600
600
#D12527
oklch(55.7% 0.206 26.8)
-
Step 700
700
#B4121A
oklch(49.1% 0.191 26.6)
-
Step 800
800
#921618
oklch(42.6% 0.158 26.6)
-
Step 900
900 (this color)
#731A18
oklch(36.9% 0.124 26.7)
-
Step 950
950
#451310
oklch(27% 0.078 27)
#731A18 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) | #352F17 | 0.132 |
| Deuteranopia (no green cones) | #4B4315 | 0.122 |
| Tritanopia (no blue cones) | #7F001B | 0.032 |
| Achromatopsia (no color) | #3C3C3C | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #731A18
#731A18
oklch(36.9% 0.124 26.7)
- #004950
#004950
oklch(37% 0.063 205.8)
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 #731A18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.023
- Blood #770001 ΔE 0.026
- Maroon #800000 ΔE 0.033
- Wine Red #7B0323 ΔE 0.033
- Chestnut #742802 ΔE 0.036
- Bordeaux #7B002C ΔE 0.045
- Claret #680018 ΔE 0.046
- Dark Red #8B0000 ΔE 0.051
Use #731A18 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.