#C03C15
Closest named color: Sinopia (#BB3E03). oklch(54.5% 0.175 35.8), rgb(192, 60, 21).
Aa
White text reads best on this color (5.38:1).
About this color
#C03C15 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.175 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.013 away. White text reads best on it, at 5.38:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.175) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.89:1 |
| White text | 5.38:1 |
Values
| HEX | #C03C15 |
| RGB | rgb(192, 60, 21) |
| HSL | hsl(14, 80%, 42%) |
| OKLCH | oklch(54.5% 0.175 35.8) |
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 #C03C15 | 5.38:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #C03C15 | 3.89:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #C03C15 text on white | 5.38:1 | AA | Lc 75.7 | Fine for body text |
| #C03C15 text on black | 3.89:1 | AA large text | Lc -26.1 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F9E5E0
oklch(93.7% 0.023 34.3)
-
Step 200
200
#F4D0C6
oklch(88.5% 0.043 36)
-
Step 300
300
#EEAF9E
oklch(80.8% 0.078 35.7)
-
Step 400
400
#E38268
oklch(70.6% 0.126 35.9)
-
Step 500
500
#D85E3E
oklch(63% 0.161 35.7)
-
Step 600
600 (this color)
#C03C15
oklch(54.5% 0.175 35.8)
-
Step 700
700
#A9300A
oklch(49.1% 0.163 35.7)
-
Step 800
800
#892A0E
oklch(42.7% 0.135 36)
-
Step 900
900
#6E2815
oklch(37.7% 0.104 36)
-
Step 950
950
#41180E
oklch(27% 0.067 34.9)
#C03C15 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) | #64580C | 0.179 |
| Deuteranopia (no green cones) | #84750A | 0.163 |
| Tritanopia (no blue cones) | #D40635 | 0.068 |
| Achromatopsia (no color) | #6A6A6A | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C03C15
#C03C15
oklch(54.5% 0.175 35.8)
- #007E94
#007E94
oklch(54.6% 0.097 215.6)
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 #C03C15, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.013
- Brick Orange #C14A09 ΔE 0.028
- Burnt Orange #C04E01 ΔE 0.036
- Dull Red #BB3F3F ΔE 0.037
- Rusty Red #AF2F0D ΔE 0.044
- Burnt Siena #B75203 ΔE 0.045
- Cinnamon #AC4F06 ΔE 0.051
- Rust Orange #C45508 ΔE 0.051
Use #C03C15 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.