#66163B
Closest named color: Merlot (#730039). oklch(34.9% 0.118 357.1), rgb(102, 22, 59).
Aa
White text reads best on this color (12.04:1).
About this color
#66163B is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.118 and its hue 357°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.031 away. White text reads best on it, at 12.04:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.118) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.74:1 |
| White text | 12.04:1 |
Values
| HEX | #66163B |
| RGB | rgb(102, 22, 59) |
| HSL | hsl(332, 65%, 24%) |
| OKLCH | oklch(34.9% 0.118 357.1) |
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 #66163B | 12.04:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #66163B | 1.74:1 | Fails | Lc 7.4 | Not readable |
| #66163B text on white | 12.04:1 | AAA | Lc 96.5 | Preferred for body text |
| #66163B text on black | 1.74:1 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#F9E3EA
oklch(93.6% 0.026 356.3)
-
Step 200
200
#F5CCD9
oklch(88.4% 0.049 357.1)
-
Step 300
300
#F0A9C1
oklch(80.9% 0.088 357.3)
-
Step 400
400
#E578A2
oklch(70.7% 0.142 356.9)
-
Step 500
500
#D9508B
oklch(63% 0.18 356.9)
-
Step 600
600
#C52C75
oklch(55.7% 0.197 357)
-
Step 700
700
#A91C62
oklch(49% 0.182 357)
-
Step 800
800
#891C50
oklch(42.7% 0.15 357)
-
Step 900
900 (this color)
#66163B
oklch(34.9% 0.118 357.1)
-
Step 950
950
#411427
oklch(27% 0.073 356.9)
#66163B 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) | #262D3C | 0.133 |
| Deuteranopia (no green cones) | #3C3C39 | 0.119 |
| Tritanopia (no blue cones) | #6F0B26 | 0.038 |
| Achromatopsia (no color) | #363636 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66163B
#66163B
oklch(34.9% 0.118 357.1)
- #00453A
#00453A
oklch(34.9% 0.064 177.6)
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 #66163B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.031
- Burgundy #610023 ΔE 0.044
- Grape Purple #5D1451 ΔE 0.047
- Bordeaux #7B002C ΔE 0.050
- Velvet #750851 ΔE 0.051
- Claret #680018 ΔE 0.053
- Wine #80013F ΔE 0.056
- Wine Red #7B0323 ΔE 0.058
Use #66163B 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.