#63043D
Closest named color: Merlot (#730039). oklch(33.1% 0.133 351.7), rgb(99, 4, 61).
Aa
White text reads best on this color (13.00:1).
About this color
#63043D is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.133 and its hue 352°. 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 13.00:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.133) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.61:1 |
| White text | 13.00:1 |
Values
| HEX | #63043D |
| RGB | rgb(99, 4, 61) |
| HSL | hsl(324, 92%, 20%) |
| OKLCH | oklch(33.1% 0.133 351.7) |
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 #63043D | 13.00:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #63043D | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #63043D text on white | 13.00:1 | AAA | Lc 97.6 | Preferred for body text |
| #63043D text on black | 1.61:1 | 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
#FAE2EC
oklch(93.5% 0.029 350.5)
-
Step 200
200
#F7CBDD
oklch(88.5% 0.055 351.8)
-
Step 300
300
#F3A6C8
oklch(80.9% 0.1 351.5)
-
Step 400
400
#E972AB
oklch(70.7% 0.159 351.9)
-
Step 500
500
#DE4597
oklch(63.1% 0.203 351.6)
-
Step 600
600
#CA1481
oklch(55.7% 0.222 351.9)
-
Step 700
700
#AD006D
oklch(49.1% 0.204 351.8)
-
Step 800
800
#8D0A59
oklch(42.7% 0.171 351.7)
-
Step 900
900 (this color)
#63043D
oklch(33.1% 0.133 351.7)
-
Step 950
950
#43102B
oklch(27% 0.084 351.6)
#63043D 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) | #1B273E | 0.151 |
| Deuteranopia (no green cones) | #35373B | 0.133 |
| Tritanopia (no blue cones) | #6B0022 | 0.050 |
| Achromatopsia (no color) | #313131 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63043D
#63043D
oklch(33.1% 0.133 351.7)
- #004032
#004032
oklch(33.1% 0.064 172.3)
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 #63043D, 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 0.038
- Burgundy #610023 ΔE 0.044
- Velvet #750851 ΔE 0.052
- Rich Purple #720058 ΔE 0.055
- Claret #680018 ΔE 0.062
- Plum Purple #4E0550 ΔE 0.064
- Bordeaux #7B002C ΔE 0.065
Use #63043D 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.