#631F30
Closest named color: Claret (#680018). oklch(35% 0.099 8.6), rgb(99, 31, 48).
Aa
White text reads best on this color (11.86:1).
About this color
#631F30 is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.099 and its hue 9°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.044 away. White text reads best on it, at 11.86:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.099) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.76:1 |
| White text | 11.86:1 |
Values
| HEX | #631F30 |
| RGB | rgb(99, 31, 48) |
| HSL | hsl(345, 52%, 25%) |
| OKLCH | oklch(35% 0.099 8.6) |
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 #631F30 | 11.86:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #631F30 | 1.76:1 | Fails | Lc 7.4 | Not readable |
| #631F30 text on white | 11.86:1 | AAA | Lc 96.5 | Preferred for body text |
| #631F30 text on black | 1.76:1 | Fails | Lc 0.0 | 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
#FCF3F4
oklch(97.1% 0.01 9.5)
-
Step 100
100
#F8E4E7
oklch(93.6% 0.022 7.2)
-
Step 200
200
#F3CFD3
oklch(88.6% 0.041 10.4)
-
Step 300
300
#ECADB7
oklch(80.9% 0.075 8.3)
-
Step 400
400
#DF8092
oklch(70.7% 0.118 8.4)
-
Step 500
500
#D35C77
oklch(63.1% 0.152 8.4)
-
Step 600
600
#BE3E60
oklch(55.5% 0.165 8.3)
-
Step 700
700
#A42F4F
oklch(49.1% 0.153 8.6)
-
Step 800
800
#852941
oklch(42.7% 0.126 8.5)
-
Step 900
900 (this color)
#631F30
oklch(35% 0.099 8.6)
-
Step 950
950
#3F1720
oklch(26.9% 0.063 8.3)
#631F30 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) | #2E2F30 | 0.110 |
| Deuteranopia (no green cones) | #403C2E | 0.100 |
| Tritanopia (no blue cones) | #6C1526 | 0.025 |
| Achromatopsia (no color) | #373737 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631F30
#631F30
oklch(35% 0.099 8.6)
- #004441
#004441
oklch(34.9% 0.06 189.8)
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 #631F30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.044
- Burgundy #610023 ΔE 0.045
- Merlot #730039 ΔE 0.050
- Reddy Brown #6E1005 ΔE 0.053
- Bordeaux #7B002C ΔE 0.055
- Wine Red #7B0323 ΔE 0.055
- Blood #770001 ΔE 0.064
- Purple Brown #673A3F ΔE 0.065
Use #631F30 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.