#660631
Closest named color: Burgundy (#610023). oklch(33.4% 0.129 2.1), rgb(102, 6, 49).
Aa
White text reads best on this color (12.84:1).
About this color
#660631 is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.129 and its hue 2°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.025 away. White text reads best on it, at 12.84:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.129) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.63:1 |
| White text | 12.84:1 |
Values
| HEX | #660631 |
| RGB | rgb(102, 6, 49) |
| HSL | hsl(333, 89%, 21%) |
| OKLCH | oklch(33.4% 0.129 2.1) |
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 #660631 | 12.84:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #660631 | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #660631 text on white | 12.84:1 | AAA | Lc 97.4 | Preferred for body text |
| #660631 text on black | 1.63:1 | 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
#FEF2F5
oklch(97.1% 0.013 0.3)
-
Step 100
100
#FBE3E8
oklch(93.7% 0.027 3.4)
-
Step 200
200
#F9CBD6
oklch(88.5% 0.054 2.2)
-
Step 300
300
#F6A6BC
oklch(80.9% 0.098 1.6)
-
Step 400
400
#EC7399
oklch(70.7% 0.154 2)
-
Step 500
500
#E34680
oklch(63.2% 0.198 2.2)
-
Step 600
600
#CE1769
oklch(55.7% 0.214 2.3)
-
Step 700
700
#B10058
oklch(49.1% 0.198 2)
-
Step 800
800
#900C48
oklch(42.7% 0.165 1.9)
-
Step 900
900 (this color)
#660631
oklch(33.4% 0.129 2.1)
-
Step 950
950
#441023
oklch(26.9% 0.082 2)
#660631 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) | #222632 | 0.146 |
| Deuteranopia (no green cones) | #3B382F | 0.130 |
| Tritanopia (no blue cones) | #70001B | 0.041 |
| Achromatopsia (no color) | #323232 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #660631
#660631
oklch(33.4% 0.129 2.1)
- #004039
#004039
oklch(33.4% 0.059 182.8)
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 #660631, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.025
- Merlot #730039 ΔE 0.031
- Claret #680018 ΔE 0.038
- Bordeaux #7B002C ΔE 0.049
- Wine Red #7B0323 ΔE 0.054
- Grape Purple #5D1451 ΔE 0.059
- Wine #80013F ΔE 0.061
- Velvet #750851 ΔE 0.062
Use #660631 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.