#731637
Closest named color: Merlot (#730039). oklch(37.2% 0.128 5.1), rgb(115, 22, 55).
Aa
White text reads best on this color (11.05:1).
About this color
#731637 is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.128 and its hue 5°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.024 away. White text reads best on it, at 11.05:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.128) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.89:1 |
| White text | 11.05:1 |
Values
| HEX | #731637 |
| RGB | rgb(115, 22, 55) |
| HSL | hsl(339, 68%, 27%) |
| OKLCH | oklch(37.2% 0.128 5.1) |
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 #731637 | 11.05:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #731637 | 1.89:1 | Fails | Lc 9.6 | Not readable |
| #731637 text on white | 11.05:1 | AAA | Lc 94.4 | Preferred for body text |
| #731637 text on black | 1.89:1 | 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
#FEF2F4
oklch(97.1% 0.013 5.8)
-
Step 100
100
#FBE3E7
oklch(93.6% 0.027 6.2)
-
Step 200
200
#F9CBD4
oklch(88.4% 0.053 5.1)
-
Step 300
300
#F6A7B8
oklch(80.9% 0.095 5.3)
-
Step 400
400
#EE7393
oklch(70.8% 0.154 5.4)
-
Step 500
500
#E44679
oklch(63.2% 0.197 5.2)
-
Step 600
600
#CF1662
oklch(55.6% 0.214 5.2)
-
Step 700
700
#B20051
oklch(49.1% 0.197 5.2)
-
Step 800
800
#910B43
oklch(42.7% 0.165 4.8)
-
Step 900
900 (this color)
#731637
oklch(37.2% 0.128 5.1)
-
Step 950
950
#451021
oklch(27% 0.082 5)
#731637 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) | #2D3038 | 0.145 |
| Deuteranopia (no green cones) | #464235 | 0.129 |
| Tritanopia (no blue cones) | #7E0024 | 0.035 |
| Achromatopsia (no color) | #3C3C3C | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #731637
#731637
oklch(37.2% 0.128 5.1)
- #004B45
#004B45
oklch(37.1% 0.065 185.7)
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 #731637, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.024
- Bordeaux #7B002C ΔE 0.025
- Wine Red #7B0323 ΔE 0.033
- Wine #80013F ΔE 0.034
- Red Purple #820747 ΔE 0.042
- Velvet #750851 ΔE 0.051
- Red Wine #8C0034 ΔE 0.053
- Claret #680018 ΔE 0.054
Use #731637 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.