#C03147
Closest named color: Dull Red (#BB3F3F). oklch(54% 0.179 17.3), rgb(192, 49, 71).
Aa
White text reads best on this color (5.56:1).
About this color
#C03147 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.179 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.028 away. White text reads best on it, at 5.56:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.77:1 |
| White text | 5.56:1 |
Values
| HEX | #C03147 |
| RGB | rgb(192, 49, 71) |
| HSL | hsl(351, 59%, 47%) |
| OKLCH | oklch(54% 0.179 17.3) |
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 #C03147 | 5.56:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #C03147 | 3.77:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #C03147 text on white | 5.56:1 | AA | Lc 76.5 | Fine for body text |
| #C03147 text on black | 3.77:1 | AA large text | Lc -25.2 | 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#F9E4E4
oklch(93.6% 0.023 17.6)
-
Step 200
200
#F5CECE
oklch(88.5% 0.044 18)
-
Step 300
300
#F0ACAE
oklch(80.9% 0.08 17)
-
Step 400
400
#E57D83
oklch(70.6% 0.128 17.2)
-
Step 500
500
#DA5764
oklch(63% 0.164 17.2)
-
Step 600
600 (this color)
#C03147
oklch(54% 0.179 17.3)
-
Step 700
700
#AA273D
oklch(49% 0.166 17)
-
Step 800
800
#8A2332
oklch(42.6% 0.137 17.3)
-
Step 900
900
#6F232C
oklch(37.6% 0.107 17.1)
-
Step 950
950
#42161A
oklch(27.1% 0.068 17.4)
#C03147 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) | #595547 | 0.197 |
| Deuteranopia (no green cones) | #7D7343 | 0.181 |
| Tritanopia (no blue cones) | #D3003A | 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°).
- #C03147
#C03147
oklch(54% 0.179 17.3)
- #007F81
#007F81
oklch(54.1% 0.092 196.7)
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 #C03147, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.028
- Dusty Red #B9484E ΔE 0.036
- Ruby #CA0147 ΔE 0.037
- Rose Red #BE013C ΔE 0.040
- Cherry #CF0234 ΔE 0.040
- Lipstick Red #C0022F ΔE 0.040
- Dark Rose #B5485D ΔE 0.042
- Lipstick #D5174E ΔE 0.045
Use #C03147 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.