#660C39
Closest named color: Merlot (#730039). oklch(34% 0.127 356.9), rgb(102, 12, 57).
Aa
White text reads best on this color (12.52:1).
About this color
#660C39 is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.127 and its hue 357°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.028 away. White text reads best on it, at 12.52:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.127) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.67:1 |
| White text | 12.52:1 |
Values
| HEX | #660C39 |
| RGB | rgb(102, 12, 57) |
| HSL | hsl(330, 79%, 22%) |
| OKLCH | oklch(34% 0.127 356.9) |
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 #660C39 | 12.52:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #660C39 | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #660C39 text on white | 12.52:1 | AAA | Lc 97.1 | Preferred for body text |
| #660C39 text on black | 1.67:1 | 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
#FAE3EA
oklch(93.6% 0.027 357.2)
-
Step 200
200
#F7CBDA
oklch(88.4% 0.053 355.8)
-
Step 300
300
#F3A7C1
oklch(80.9% 0.095 357.3)
-
Step 400
400
#E974A2
oklch(70.7% 0.152 356.9)
-
Step 500
500
#DF488B
oklch(63.1% 0.195 357)
-
Step 600
600
#CA1E75
oklch(55.7% 0.211 357.1)
-
Step 700
700
#AE0862
oklch(49.1% 0.197 357.1)
-
Step 800
800
#8D1150
oklch(42.6% 0.163 357)
-
Step 900
900 (this color)
#660C39
oklch(34% 0.127 356.9)
-
Step 950
950
#431127
oklch(27% 0.081 356.8)
#660C39 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) | #22293A | 0.143 |
| Deuteranopia (no green cones) | #3A3A37 | 0.129 |
| Tritanopia (no blue cones) | #6F0022 | 0.042 |
| Achromatopsia (no color) | #343434 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #660C39
#660C39
oklch(34% 0.127 356.9)
- #004237
#004237
oklch(33.9% 0.063 177)
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 #660C39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.028
- Burgundy #610023 ΔE 0.038
- Grape Purple #5D1451 ΔE 0.047
- Claret #680018 ΔE 0.051
- Velvet #750851 ΔE 0.051
- Bordeaux #7B002C ΔE 0.052
- Wine #80013F ΔE 0.057
- Wine Red #7B0323 ΔE 0.060
Use #660C39 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.