#C03140
Closest named color: Dull Red (#BB3F3F). oklch(53.9% 0.179 20.2), rgb(192, 49, 64).
Aa
White text reads best on this color (5.59:1).
About this color
#C03140 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.179 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.023 away. White text reads best on it, at 5.59:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #C03140 |
| RGB | rgb(192, 49, 64) |
| HSL | hsl(354, 59%, 47%) |
| OKLCH | oklch(53.9% 0.179 20.2) |
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 #C03140 | 5.59:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #C03140 | 3.75:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #C03140 text on white | 5.59:1 | AA | Lc 76.6 | Fine for body text |
| #C03140 text on black | 3.75:1 | AA large text | Lc -25.1 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E3
oklch(93.5% 0.023 20.9)
-
Step 200
200
#F6CECD
oklch(88.5% 0.045 19.7)
-
Step 300
300
#F0ACAB
oklch(80.8% 0.08 19.9)
-
Step 400
400
#E67E7F
oklch(70.8% 0.129 20.2)
-
Step 500
500
#DB585E
oklch(63.1% 0.164 20.4)
-
Step 600
600 (this color)
#C03140
oklch(53.9% 0.179 20.2)
-
Step 700
700
#AB2837
oklch(49.2% 0.166 20)
-
Step 800
800
#8B242D
oklch(42.8% 0.138 20.6)
-
Step 900
900
#702429
oklch(37.8% 0.107 20.1)
-
Step 950
950
#421618
oklch(27% 0.068 20.2)
#C03140 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) | #5A543F | 0.196 |
| Deuteranopia (no green cones) | #7E733C | 0.180 |
| Tritanopia (no blue cones) | #D30038 | 0.043 |
| Achromatopsia (no color) | #686868 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C03140
#C03140
oklch(53.9% 0.179 20.2)
- #007E83
#007E83
oklch(53.9% 0.092 199.7)
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 #C03140, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.023
- Dusty Red #B9484E ΔE 0.036
- Lipstick Red #C0022F ΔE 0.038
- Cherry #CF0234 ΔE 0.038
- Rose Red #BE013C ΔE 0.041
- Ruby #CA0147 ΔE 0.041
- Dark Rose #B5485D ΔE 0.046
- Firebrick #B22222 ΔE 0.047
Use #C03140 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.