#631715
Closest named color: Reddy Brown (#6E1005). oklch(33.4% 0.109 26.5), rgb(99, 23, 21).
Aa
White text reads best on this color (12.62:1).
About this color
#631715 is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.109 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.026 away. White text reads best on it, at 12.62:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.109) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.66:1 |
| White text | 12.62:1 |
Values
| HEX | #631715 |
| RGB | rgb(99, 23, 21) |
| HSL | hsl(2, 65%, 24%) |
| OKLCH | oklch(33.4% 0.109 26.5) |
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 #631715 | 12.62:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #631715 | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #631715 text on white | 12.62:1 | AAA | Lc 97.6 | Preferred for body text |
| #631715 text on black | 1.66:1 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E2
oklch(93.5% 0.023 24.1)
-
Step 200
200
#F6CEC9
oklch(88.4% 0.046 26.4)
-
Step 300
300
#F1ADA5
oklch(81% 0.081 26.5)
-
Step 400
400
#E77E74
oklch(70.7% 0.131 26.6)
-
Step 500
500
#DC5850
oklch(63% 0.167 26.4)
-
Step 600
600
#C83834
oklch(55.7% 0.182 26.6)
-
Step 700
700
#AC2827
oklch(49.1% 0.169 26.4)
-
Step 800
800
#8C2421
oklch(42.8% 0.14 26.7)
-
Step 900
900 (this color)
#631715
oklch(33.4% 0.109 26.5)
-
Step 950
950
#421613
oklch(26.9% 0.069 26.6)
#631715 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) | #2D2914 | 0.117 |
| Deuteranopia (no green cones) | #403912 | 0.107 |
| Tritanopia (no blue cones) | #6E0017 | 0.031 |
| Achromatopsia (no color) | #333333 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631715
#631715
oklch(33.4% 0.109 26.5)
- #003F45
#003F45
oklch(33.6% 0.057 205.4)
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 #631715, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.026
- Claret #680018 ΔE 0.029
- Burgundy #610023 ΔE 0.043
- Blood #770001 ΔE 0.045
- Wine Red #7B0323 ΔE 0.057
- Chestnut #742802 ΔE 0.060
- Maroon #800000 ΔE 0.063
- Bordeaux #7B002C ΔE 0.065
Use #631715 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.