#C43D16
Closest named color: Sinopia (#BB3E03). oklch(55.3% 0.178 35.6), rgb(196, 61, 22).
Aa
White text reads best on this color (5.21:1).
About this color
#C43D16 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.178 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.020 away. White text reads best on it, at 5.21:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.178) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #C43D16 |
| RGB | rgb(196, 61, 22) |
| HSL | hsl(13, 80%, 43%) |
| OKLCH | oklch(55.3% 0.178 35.6) |
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 #C43D16 | 5.21:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #C43D16 | 4.02:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #C43D16 text on white | 5.21:1 | AA | Lc 74.7 | Content text, not long reading |
| #C43D16 text on black | 4.02:1 | AA large text | Lc -27.0 | 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
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F5CFC5
oklch(88.4% 0.045 35.1)
-
Step 300
300
#EFAF9D
oklch(80.9% 0.08 36.3)
-
Step 400
400
#E48168
oklch(70.6% 0.128 35.1)
-
Step 500
500
#DA5D3D
oklch(63.1% 0.164 35.5)
-
Step 600
600 (this color)
#C43D16
oklch(55.3% 0.178 35.6)
-
Step 700
700
#AA2F07
oklch(49.2% 0.165 35.7)
-
Step 800
800
#8A290D
oklch(42.8% 0.137 35.7)
-
Step 900
900
#6F2714
oklch(37.7% 0.107 35.6)
-
Step 950
950
#41180D
oklch(27% 0.067 36)
#C43D16 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) | #66590D | 0.182 |
| Deuteranopia (no green cones) | #87780B | 0.166 |
| Tritanopia (no blue cones) | #D80436 | 0.069 |
| Achromatopsia (no color) | #6C6C6C | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C43D16
#C43D16
oklch(55.3% 0.178 35.6)
- #008096
#008096
oklch(55.2% 0.098 215.3)
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 #C43D16, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.020
- Brick Orange #C14A09 ΔE 0.025
- Burnt Orange #C04E01 ΔE 0.034
- Dull Red #BB3F3F ΔE 0.039
- Burnt Siena #B75203 ΔE 0.046
- Rust Orange #C45508 ΔE 0.047
- Rusty Red #AF2F0D ΔE 0.053
- Dusty Red #B9484E ΔE 0.054
Use #C43D16 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.