#C51234
Closest named color: Lipstick Red (#C0022F). oklch(52.6% 0.204 20.4), rgb(197, 18, 52).
Aa
White text reads best on this color (5.98:1).
About this color
#C51234 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.204 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Lipstick Red (#C0022F), ΔE 0.015 away. White text reads best on it, at 5.98:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.204) |
| Temperature | warm |
| Nearest name | Lipstick Red (#C0022F) |
| Black text | 3.51:1 |
| White text | 5.98:1 |
Values
| HEX | #C51234 |
| RGB | rgb(197, 18, 52) |
| HSL | hsl(349, 83%, 42%) |
| OKLCH | oklch(52.6% 0.204 20.4) |
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 #C51234 | 5.98:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #C51234 | 3.51:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #C51234 text on white | 5.98:1 | AA | Lc 77.7 | Fine for body text |
| #C51234 text on black | 3.51:1 | AA large text | Lc -24.1 | 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
#FBE3E2
oklch(93.5% 0.026 20.5)
-
Step 200
200
#F9CCCB
oklch(88.4% 0.051 19.7)
-
Step 300
300
#F6A9A8
oklch(80.9% 0.091 20.1)
-
Step 400
400
#EE7779
oklch(70.7% 0.147 20.5)
-
Step 500
500
#E44C57
oklch(63% 0.188 20.3)
-
Step 600
600 (this color)
#C51234
oklch(52.6% 0.204 20.4)
-
Step 700
700
#B3102F
oklch(49% 0.189 20.3)
-
Step 800
800
#921527
oklch(42.8% 0.158 20.6)
-
Step 900
900
#751C24
oklch(37.7% 0.122 20.6)
-
Step 950
950
#451216
oklch(27% 0.078 19.6)
#C51234 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) | #524C33 | 0.227 |
| Deuteranopia (no green cones) | #7C702E | 0.206 |
| Tritanopia (no blue cones) | #D90024 | 0.042 |
| Achromatopsia (no color) | #636363 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C51234
#C51234
oklch(52.6% 0.204 20.4)
- #007A7F
#007A7F
oklch(52.7% 0.09 199.8)
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 #C51234, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lipstick Red #C0022F ΔE 0.015
- Cherry #CF0234 ΔE 0.020
- Rose Red #BE013C ΔE 0.023
- Ruby #CA0147 ΔE 0.028
- Scarlet #BE0119 ΔE 0.029
- Firebrick #B22222 ΔE 0.044
- Lipstick #D5174E ΔE 0.045
- Crimson #DC143C ΔE 0.049
Use #C51234 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.