#C63A2E
Closest named color: Dull Red (#BB3F3F). oklch(55.5% 0.179 29), rgb(198, 58, 46).
Aa
White text reads best on this color (5.19:1).
About this color
#C63A2E is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.179 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.026 away. White text reads best on it, at 5.19:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.04:1 |
| White text | 5.19:1 |
Values
| HEX | #C63A2E |
| RGB | rgb(198, 58, 46) |
| HSL | hsl(5, 62%, 48%) |
| OKLCH | oklch(55.5% 0.179 29) |
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 #C63A2E | 5.19:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #C63A2E | 4.04:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #C63A2E text on white | 5.19:1 | AA | Lc 74.5 | Content text, not long reading |
| #C63A2E text on black | 4.04:1 | AA large text | Lc -27.2 | Dividers and decoration only |
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 600.
-
Step 50
50
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E4E1
oklch(93.5% 0.023 27.3)
-
Step 200
200
#F5CFC8
oklch(88.5% 0.044 30.2)
-
Step 300
300
#F0ADA3
oklch(80.8% 0.081 28.5)
-
Step 400
400
#E67F71
oklch(70.7% 0.13 28.9)
-
Step 500
500
#DB5A4C
oklch(63.1% 0.165 28.8)
-
Step 600
600 (this color)
#C63A2E
oklch(55.5% 0.179 29)
-
Step 700
700
#AB2B21
oklch(49.1% 0.166 29.1)
-
Step 800
800
#8B261D
oklch(42.8% 0.138 29.1)
-
Step 900
900
#70251D
oklch(37.7% 0.108 29.2)
-
Step 950
950
#421712
oklch(27.1% 0.068 29)
#C63A2E 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) | #63592B | 0.190 |
| Deuteranopia (no green cones) | #867828 | 0.173 |
| Tritanopia (no blue cones) | #DA0039 | 0.057 |
| Achromatopsia (no color) | #6D6D6D | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C63A2E
#C63A2E
oklch(55.5% 0.179 29)
- #008291
#008291
oklch(55.5% 0.096 208.9)
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 #C63A2E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.026
- Sinopia #BB3E03 ΔE 0.036
- Dusty Red #B9484E ΔE 0.041
- Brick Orange #C14A09 ΔE 0.042
- Faded Red #D3494E ΔE 0.048
- Cherry #CF0234 ΔE 0.050
- Burnt Orange #C04E01 ΔE 0.051
- Dark Coral #CF524E ΔE 0.052
Use #C63A2E 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.