#66193B
Closest named color: Merlot (#730039). oklch(35.2% 0.114 357.8), rgb(102, 25, 59).
Aa
White text reads best on this color (11.88:1).
About this color
#66193B is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.114 and its hue 358°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.033 away. White text reads best on it, at 11.88:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.114) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.76:1 |
| White text | 11.88:1 |
Values
| HEX | #66193B |
| RGB | rgb(102, 25, 59) |
| HSL | hsl(334, 61%, 25%) |
| OKLCH | oklch(35.2% 0.114 357.8) |
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 #66193B | 11.88:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #66193B | 1.76:1 | Fails | Lc 7.6 | Not readable |
| #66193B text on white | 11.88:1 | AAA | Lc 96.3 | Preferred for body text |
| #66193B text on black | 1.76:1 | 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
#FCF2F5
oklch(97% 0.011 357)
-
Step 100
100
#F9E3EA
oklch(93.6% 0.026 356.3)
-
Step 200
200
#F5CDD9
oklch(88.6% 0.048 358.2)
-
Step 300
300
#EFAAC0
oklch(80.9% 0.085 358.4)
-
Step 400
400
#E37AA0
oklch(70.7% 0.136 358.1)
-
Step 500
500
#D85389
oklch(63.2% 0.174 358.1)
-
Step 600
600
#C33173
oklch(55.7% 0.189 358)
-
Step 700
700
#A82161
oklch(49.2% 0.177 357.7)
-
Step 800
800
#881F4F
oklch(42.7% 0.146 357.7)
-
Step 900
900 (this color)
#66193B
oklch(35.2% 0.114 357.8)
-
Step 950
950
#411426
oklch(27% 0.073 358.3)
#66193B 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) | #282E3C | 0.128 |
| Deuteranopia (no green cones) | #3D3C39 | 0.114 |
| Tritanopia (no blue cones) | #6F1027 | 0.037 |
| Achromatopsia (no color) | #373737 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66193B
#66193B
oklch(35.2% 0.114 357.8)
- #00463B
#00463B
oklch(35.3% 0.065 177.8)
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 #66193B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.033
- Burgundy #610023 ΔE 0.046
- Grape Purple #5D1451 ΔE 0.049
- Bordeaux #7B002C ΔE 0.050
- Velvet #750851 ΔE 0.053
- Claret #680018 ΔE 0.054
- Wine #80013F ΔE 0.056
- Wine Red #7B0323 ΔE 0.057
Use #66193B 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.