#63203A
Closest named color: Merlot (#730039). oklch(35.5% 0.1 359.5), rgb(99, 32, 58).
Aa
White text reads best on this color (11.67:1).
About this color
#63203A is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.100 and its hue 360°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.046 away. White text reads best on it, at 11.67:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.100) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.79:1 |
| White text | 11.67:1 |
Values
| HEX | #63203A |
| RGB | rgb(99, 32, 58) |
| HSL | hsl(337, 51%, 26%) |
| OKLCH | oklch(35.5% 0.1 359.5) |
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 #63203A | 11.67:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #63203A | 1.79:1 | Fails | Lc 7.7 | Not readable |
| #63203A text on white | 11.67:1 | AAA | Lc 96.2 | Preferred for body text |
| #63203A text on black | 1.79:1 | 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
#FCF3F5
oklch(97.2% 0.01 2)
-
Step 100
100
#F7E4E9
oklch(93.5% 0.022 359.7)
-
Step 200
200
#F2CED8
oklch(88.5% 0.042 359.4)
-
Step 300
300
#EAADBF
oklch(80.9% 0.075 359.5)
-
Step 400
400
#DD7F9E
oklch(70.7% 0.121 359.5)
-
Step 500
500
#D15C86
oklch(63.2% 0.153 359.9)
-
Step 600
600
#BC3E70
oklch(55.7% 0.167 359.7)
-
Step 700
700
#A12F5E
oklch(49.1% 0.155 359.4)
-
Step 800
800
#83284D
oklch(42.7% 0.129 359.2)
-
Step 900
900 (this color)
#63203A
oklch(35.5% 0.1 359.5)
-
Step 950
950
#3E1725
oklch(26.9% 0.063 359.7)
#63203A 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) | #2C303B | 0.112 |
| Deuteranopia (no green cones) | #3E3D38 | 0.102 |
| Tritanopia (no blue cones) | #6B192A | 0.030 |
| Achromatopsia (no color) | #383838 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63203A
#63203A
oklch(35.5% 0.1 359.5)
- #00473D
#00473D
oklch(35.6% 0.065 179.4)
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 #63203A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.046
- Burgundy #610023 ΔE 0.051
- Grape Purple #5D1451 ΔE 0.056
- Claret #680018 ΔE 0.056
- Bordeaux #7B002C ΔE 0.057
- Wine Red #7B0323 ΔE 0.061
- Velvet #750851 ΔE 0.063
- Purple Brown #673A3F ΔE 0.065
Use #63203A 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.