#63183D
Closest named color: Merlot (#730039). oklch(34.6% 0.113 354.5), rgb(99, 24, 61).
Aa
White text reads best on this color (12.14:1).
About this color
#63183D is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.113 and its hue 355°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.038 away. White text reads best on it, at 12.14:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.113) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.72:1 |
| White text | 12.14:1 |
Values
| HEX | #63183D |
| RGB | rgb(99, 24, 61) |
| HSL | hsl(330, 61%, 24%) |
| OKLCH | oklch(34.6% 0.113 354.5) |
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 #63183D | 12.14:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #63183D | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #63183D text on white | 12.14:1 | AAA | Lc 96.8 | Preferred for body text |
| #63183D text on black | 1.72:1 | 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
#FCF2F6
oklch(97% 0.012 351)
-
Step 100
100
#F8E3EB
oklch(93.5% 0.025 352.5)
-
Step 200
200
#F4CDDB
oklch(88.5% 0.047 354.5)
-
Step 300
300
#EDAAC4
oklch(80.9% 0.085 354.1)
-
Step 400
400
#E17AA6
oklch(70.7% 0.136 354.1)
-
Step 500
500
#D55490
oklch(63.1% 0.173 354.3)
-
Step 600
600
#C1327A
oklch(55.7% 0.189 354.5)
-
Step 700
700
#A62366
oklch(49.1% 0.175 354.9)
-
Step 800
800
#872054
oklch(42.8% 0.146 354.4)
-
Step 900
900 (this color)
#63183D
oklch(34.6% 0.113 354.5)
-
Step 950
950
#401528
oklch(27% 0.071 355.4)
#63183D 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) | #262D3E | 0.126 |
| Deuteranopia (no green cones) | #3B3B3B | 0.113 |
| Tritanopia (no blue cones) | #6B1128 | 0.038 |
| Achromatopsia (no color) | #363636 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63183D
#63183D
oklch(34.6% 0.113 354.5)
- #004437
#004437
oklch(34.5% 0.065 174.6)
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 #63183D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.038
- Grape Purple #5D1451 ΔE 0.042
- Burgundy #610023 ΔE 0.046
- Velvet #750851 ΔE 0.053
- Claret #680018 ΔE 0.057
- Bordeaux #7B002C ΔE 0.058
- Rich Purple #720058 ΔE 0.062
- Wine #80013F ΔE 0.062
Use #63183D 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.