#C42C55
Closest named color: Ruby (#CA0147). oklch(54.6% 0.188 10.9), rgb(196, 44, 85).
Aa
White text reads best on this color (5.47:1).
About this color
#C42C55 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.188 and its hue 11°. Its hue sits on the warm side of the wheel. The nearest named color is Ruby (#CA0147), ΔE 0.030 away. White text reads best on it, at 5.47:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.188) |
| Temperature | warm |
| Nearest name | Ruby (#CA0147) |
| Black text | 3.83:1 |
| White text | 5.47:1 |
Values
| HEX | #C42C55 |
| RGB | rgb(196, 44, 85) |
| HSL | hsl(344, 63%, 47%) |
| OKLCH | oklch(54.6% 0.188 10.9) |
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 #C42C55 | 5.47:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #C42C55 | 3.83:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #C42C55 text on white | 5.47:1 | AA | Lc 75.9 | Fine for body text |
| #C42C55 text on black | 3.83:1 | AA large text | Lc -25.9 | 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
#FDF2F3
oklch(97% 0.012 11)
-
Step 100
100
#FAE4E6
oklch(93.7% 0.024 11.3)
-
Step 200
200
#F6CDD1
oklch(88.4% 0.047 11.4)
-
Step 300
300
#F1AAB3
oklch(80.8% 0.084 10.7)
-
Step 400
400
#E77A8C
oklch(70.7% 0.135 10.7)
-
Step 500
500
#DC5370
oklch(63.1% 0.172 10.7)
-
Step 600
600 (this color)
#C42C55
oklch(54.6% 0.188 10.9)
-
Step 700
700
#AC2048
oklch(49.1% 0.175 10.8)
-
Step 800
800
#8C1E3B
oklch(42.7% 0.145 11)
-
Step 900
900
#702033
oklch(37.6% 0.113 10.3)
-
Step 950
950
#42141E
oklch(26.9% 0.072 10)
#C42C55 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) | #565656 | 0.209 |
| Deuteranopia (no green cones) | #7D7451 | 0.190 |
| Tritanopia (no blue cones) | #D6003E | 0.044 |
| Achromatopsia (no color) | #696969 | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C42C55
#C42C55
oklch(54.6% 0.188 10.9)
- #00817D
#00817D
oklch(54.5% 0.094 191)
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 #C42C55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ruby #CA0147 ΔE 0.030
- Lipstick #D5174E ΔE 0.034
- Dark Pink #CB416B ΔE 0.042
- Rose Red #BE013C ΔE 0.043
- Deep Rose #C74767 ΔE 0.044
- Cherry #CF0234 ΔE 0.045
- Dark Rose #B5485D ΔE 0.046
- Dull Red #BB3F3F ΔE 0.049
Use #C42C55 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.