#631421
Closest named color: Claret (#680018). oklch(33.3% 0.111 16.8), rgb(99, 20, 33).
Aa
White text reads best on this color (12.70:1).
About this color
#631421 is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.111 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.022 away. White text reads best on it, at 12.70:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.111) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.65:1 |
| White text | 12.70:1 |
Values
| HEX | #631421 |
| RGB | rgb(99, 20, 33) |
| HSL | hsl(350, 66%, 23%) |
| OKLCH | oklch(33.3% 0.111 16.8) |
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 #631421 | 12.70:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #631421 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #631421 text on white | 12.70:1 | AAA | Lc 97.7 | Preferred for body text |
| #631421 text on black | 1.65:1 | 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#FAE4E4
oklch(93.7% 0.024 17.6)
-
Step 200
200
#F6CDCE
oklch(88.4% 0.046 16.4)
-
Step 300
300
#F2ABAE
oklch(80.9% 0.084 16.3)
-
Step 400
400
#E77B83
oklch(70.6% 0.133 16.4)
-
Step 500
500
#DD5564
oklch(63.2% 0.17 16.9)
-
Step 600
600
#C8324B
oklch(55.5% 0.185 16.7)
-
Step 700
700
#AC233C
oklch(49% 0.171 16.9)
-
Step 800
800
#8C2032
oklch(42.7% 0.143 16.7)
-
Step 900
900 (this color)
#631421
oklch(33.3% 0.111 16.8)
-
Step 950
950
#42151A
oklch(26.9% 0.07 16.4)
#631421 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) | #2A2821 | 0.123 |
| Deuteranopia (no green cones) | #3E391F | 0.113 |
| Tritanopia (no blue cones) | #6D001A | 0.026 |
| Achromatopsia (no color) | #333333 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631421
#631421
oklch(33.3% 0.111 16.8)
- #003F40
#003F40
oklch(33.3% 0.057 196.6)
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 #631421, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.022
- Burgundy #610023 ΔE 0.028
- Reddy Brown #6E1005 ΔE 0.037
- Blood #770001 ΔE 0.051
- Wine Red #7B0323 ΔE 0.052
- Bordeaux #7B002C ΔE 0.055
- Merlot #730039 ΔE 0.056
- Maroon #800000 ΔE 0.068
Use #631421 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.