#C51438
Closest named color: Lipstick Red (#C0022F). oklch(52.8% 0.203 19.3), rgb(197, 20, 56).
Aa
White text reads best on this color (5.94:1).
About this color
#C51438 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.203 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Lipstick Red (#C0022F), ΔE 0.017 away. White text reads best on it, at 5.94:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.203) |
| Temperature | warm |
| Nearest name | Lipstick Red (#C0022F) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #C51438 |
| RGB | rgb(197, 20, 56) |
| HSL | hsl(348, 82%, 43%) |
| OKLCH | oklch(52.8% 0.203 19.3) |
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 #C51438 | 5.94:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #C51438 | 3.53:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #C51438 text on white | 5.94:1 | AA | Lc 77.6 | Fine for body text |
| #C51438 text on black | 3.53:1 | AA large text | Lc -24.2 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FBE3E3
oklch(93.5% 0.026 17.6)
-
Step 200
200
#F9CCCC
oklch(88.4% 0.051 18.2)
-
Step 300
300
#F6A9A9
oklch(80.9% 0.091 19.2)
-
Step 400
400
#ED777B
oklch(70.6% 0.146 19.4)
-
Step 500
500
#E44D5A
oklch(63.2% 0.186 19.4)
-
Step 600
600 (this color)
#C51438
oklch(52.8% 0.203 19.3)
-
Step 700
700
#B31132
oklch(49.1% 0.189 19.3)
-
Step 800
800
#91162A
oklch(42.7% 0.156 19.3)
-
Step 900
900
#751C26
oklch(37.7% 0.122 19.3)
-
Step 950
950
#451317
oklch(27.1% 0.077 19.3)
#C51438 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) | #524D38 | 0.226 |
| Deuteranopia (no green cones) | #7C7032 | 0.205 |
| Tritanopia (no blue cones) | #D90026 | 0.043 |
| Achromatopsia (no color) | #646464 | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C51438
#C51438
oklch(52.8% 0.203 19.3)
- #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 #C51438, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lipstick Red #C0022F ΔE 0.017
- Cherry #CF0234 ΔE 0.020
- Rose Red #BE013C ΔE 0.022
- Ruby #CA0147 ΔE 0.024
- Scarlet #BE0119 ΔE 0.033
- Lipstick #D5174E ΔE 0.042
- Firebrick #B22222 ΔE 0.046
- Crimson #DC143C ΔE 0.048
Use #C51438 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.