#C42C47
Closest named color: Ruby (#CA0147). oklch(54.3% 0.187 16.8), rgb(196, 44, 71).
Aa
White text reads best on this color (5.52:1).
About this color
#C42C47 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.187 and its hue 17°. 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 5.52:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.187) |
| Temperature | warm |
| Nearest name | Ruby (#CA0147) |
| Black text | 3.79:1 |
| White text | 5.52:1 |
Values
| HEX | #C42C47 |
| RGB | rgb(196, 44, 71) |
| HSL | hsl(349, 63%, 47%) |
| OKLCH | oklch(54.3% 0.187 16.8) |
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 #C42C47 | 5.52:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #C42C47 | 3.79:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #C42C47 text on white | 5.52:1 | AA | Lc 76.1 | Fine for body text |
| #C42C47 text on black | 3.79:1 | AA large text | Lc -25.6 | 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#FAE4E4
oklch(93.7% 0.024 17.6)
-
Step 200
200
#F7CDCE
oklch(88.5% 0.048 16.5)
-
Step 300
300
#F2ABAD
oklch(80.9% 0.084 17.2)
-
Step 400
400
#E87B83
oklch(70.7% 0.135 16.5)
-
Step 500
500
#DD5464
oklch(63.1% 0.171 16.6)
-
Step 600
600 (this color)
#C42C47
oklch(54.3% 0.187 16.8)
-
Step 700
700
#AD213C
oklch(49.1% 0.174 16.6)
-
Step 800
800
#8D1F32
oklch(42.8% 0.144 16.6)
-
Step 900
900
#71212C
oklch(37.7% 0.112 16.5)
-
Step 950
950
#43151A
oklch(27.1% 0.071 16.7)
#C42C47 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) | #585447 | 0.207 |
| Deuteranopia (no green cones) | #7E7443 | 0.190 |
| Tritanopia (no blue cones) | #D70038 | 0.041 |
| Achromatopsia (no color) | #696969 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C42C47
#C42C47
oklch(54.3% 0.187 16.8)
- #008082
#008082
oklch(54.4% 0.093 196.7)
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 #C42C47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ruby #CA0147 ΔE 0.030
- Cherry #CF0234 ΔE 0.033
- Dull Red #BB3F3F ΔE 0.035
- Lipstick #D5174E ΔE 0.036
- Rose Red #BE013C ΔE 0.037
- Lipstick Red #C0022F ΔE 0.038
- Dusty Red #B9484E ΔE 0.043
- Crimson #DC143C ΔE 0.047
Use #C42C47 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.