#C91F43
Closest named color: Ruby (#CA0147). oklch(54.2% 0.201 17), rgb(201, 31, 67).
Aa
White text reads best on this color (5.58:1).
About this color
#C91F43 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.201 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Ruby (#CA0147), ΔE 0.019 away. White text reads best on it, at 5.58:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.201) |
| Temperature | warm |
| Nearest name | Ruby (#CA0147) |
| Black text | 3.76:1 |
| White text | 5.58:1 |
Values
| HEX | #C91F43 |
| RGB | rgb(201, 31, 67) |
| HSL | hsl(347, 73%, 45%) |
| OKLCH | oklch(54.2% 0.201 17) |
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 #C91F43 | 5.58:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #C91F43 | 3.76:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #C91F43 text on white | 5.58:1 | AA | Lc 76.0 | Fine for body text |
| #C91F43 text on black | 3.76:1 | AA large text | Lc -25.7 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FBE3E4
oklch(93.6% 0.026 14.7)
-
Step 200
200
#F9CCCD
oklch(88.4% 0.051 16.7)
-
Step 300
300
#F5A9AC
oklch(80.9% 0.09 16.6)
-
Step 400
400
#EC7780
oklch(70.6% 0.144 16.7)
-
Step 500
500
#E34D60
oklch(63.1% 0.185 16.9)
-
Step 600
600 (this color)
#C91F43
oklch(54.2% 0.201 17)
-
Step 700
700
#B21438
oklch(49.2% 0.187 17.2)
-
Step 800
800
#90172F
oklch(42.7% 0.154 16.9)
-
Step 900
900
#741D2A
oklch(37.7% 0.12 16.8)
-
Step 950
950
#441319
oklch(27% 0.075 16.6)
#C91F43 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) | #555143 | 0.224 |
| Deuteranopia (no green cones) | #7F743E | 0.204 |
| Tritanopia (no blue cones) | #DD0030 | 0.042 |
| Achromatopsia (no color) | #686868 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C91F43
#C91F43
oklch(54.2% 0.201 17)
- #007F82
#007F82
oklch(54.1% 0.092 197.7)
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 #C91F43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ruby #CA0147 ΔE 0.019
- Cherry #CF0234 ΔE 0.020
- Lipstick #D5174E ΔE 0.028
- Rose Red #BE013C ΔE 0.033
- Lipstick Red #C0022F ΔE 0.034
- Crimson #DC143C ΔE 0.038
- Dull Red #BB3F3F ΔE 0.046
- Scarlet #BE0119 ΔE 0.049
Use #C91F43 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.