#63133B
Closest named color: Merlot (#730039). oklch(34.1% 0.118 355.1), rgb(99, 19, 59).
Aa
White text reads best on this color (12.44:1).
About this color
#63133B is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.118 and its hue 355°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.035 away. White text reads best on it, at 12.44:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.118) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.68:1 |
| White text | 12.44:1 |
Values
| HEX | #63133B |
| RGB | rgb(99, 19, 59) |
| HSL | hsl(330, 68%, 23%) |
| OKLCH | oklch(34.1% 0.118 355.1) |
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 #63133B | 12.44:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #63133B | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #63133B text on white | 12.44:1 | AAA | Lc 97.2 | Preferred for body text |
| #63133B text on black | 1.68:1 | 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
#FDF2F6
oklch(97.1% 0.013 353.1)
-
Step 100
100
#F9E3EB
oklch(93.6% 0.026 353.5)
-
Step 200
200
#F5CCDB
oklch(88.5% 0.05 354.2)
-
Step 300
300
#EFA9C3
oklch(80.9% 0.088 355.2)
-
Step 400
400
#E478A5
oklch(70.7% 0.142 355)
-
Step 500
500
#D9508F
oklch(63.2% 0.182 355.1)
-
Step 600
600
#C42C79
oklch(55.6% 0.197 355.1)
-
Step 700
700
#A91C66
oklch(49.2% 0.184 355.1)
-
Step 800
800
#891B53
oklch(42.7% 0.152 355)
-
Step 900
900 (this color)
#63133B
oklch(34.1% 0.118 355.1)
-
Step 950
950
#411328
oklch(26.9% 0.076 355.1)
#63133B 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) | #232B3C | 0.133 |
| Deuteranopia (no green cones) | #393939 | 0.118 |
| Tritanopia (no blue cones) | #6B0925 | 0.039 |
| Achromatopsia (no color) | #343434 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63133B
#63133B
oklch(34.1% 0.118 355.1)
- #004336
#004336
oklch(34.2% 0.065 174.4)
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 #63133B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.035
- Burgundy #610023 ΔE 0.041
- Grape Purple #5D1451 ΔE 0.042
- Velvet #750851 ΔE 0.054
- Claret #680018 ΔE 0.054
- Bordeaux #7B002C ΔE 0.057
- Rich Purple #720058 ΔE 0.062
- Wine #80013F ΔE 0.063
Use #63133B 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.