#C01637
Closest named color: Lipstick Red (#C0022F). oklch(51.9% 0.198 19.3), rgb(192, 22, 55).
Aa
White text reads best on this color (6.15:1).
About this color
#C01637 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.198 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Lipstick Red (#C0022F), ΔE 0.011 away. White text reads best on it, at 6.15:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.198) |
| Temperature | warm |
| Nearest name | Lipstick Red (#C0022F) |
| Black text | 3.41:1 |
| White text | 6.15:1 |
Values
| HEX | #C01637 |
| RGB | rgb(192, 22, 55) |
| HSL | hsl(348, 79%, 42%) |
| OKLCH | oklch(51.9% 0.198 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 #C01637 | 6.15:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #C01637 | 3.41:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #C01637 text on white | 6.15:1 | AA | Lc 78.7 | Fine for body text |
| #C01637 text on black | 3.41:1 | AA large text | Lc -23.1 | 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 700.
-
Step 50
50
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E2
oklch(93.6% 0.028 20.4)
-
Step 200
200
#FBCCCB
oklch(88.6% 0.053 19.6)
-
Step 300
300
#F8A8A8
oklch(80.9% 0.095 19.3)
-
Step 400
400
#F17479
oklch(70.7% 0.154 19.4)
-
Step 500
500
#E84857
oklch(63.2% 0.196 19.6)
-
Step 600
600
#D3183D
oklch(55.6% 0.213 19.3)
-
Step 700
700 (this color)
#C01637
oklch(51.9% 0.198 19.3)
-
Step 800
800
#940D28
oklch(42.7% 0.164 19.3)
-
Step 900
900
#771925
oklch(37.8% 0.128 19.2)
-
Step 950
950
#461116
oklch(27% 0.081 19.1)
#C01637 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) | #504B37 | 0.220 |
| Deuteranopia (no green cones) | #796E31 | 0.201 |
| Tritanopia (no blue cones) | #D30026 | 0.040 |
| Achromatopsia (no color) | #616161 | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C01637
#C01637
oklch(51.9% 0.198 19.3)
- #00787C
#00787C
oklch(52% 0.088 198.9)
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 #C01637, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lipstick Red #C0022F ΔE 0.011
- Rose Red #BE013C ΔE 0.016
- Scarlet #BE0119 ΔE 0.028
- Cherry #CF0234 ΔE 0.029
- Ruby #CA0147 ΔE 0.030
- Firebrick #B22222 ΔE 0.038
- Rouge #AB1239 ΔE 0.046
- Dull Red #BB3F3F ΔE 0.048
Use #C01637 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.