#C55D33
Closest named color: Terra Cotta (#C9643B). oklch(59.9% 0.144 41.4), rgb(197, 93, 51).
Aa
Black text reads best on this color (4.98:1).
About this color
#C55D33 is a medium-dark, vivid orange. In OKLCH its lightness is 60%, its chroma 0.144 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Terra Cotta (#C9643B), ΔE 0.018 away. Black text reads best on it, at 4.98:1.
| Hue family | Oranges |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.144) |
| Temperature | warm |
| Nearest name | Terra Cotta (#C9643B) |
| Black text | 4.98:1 |
| White text | 4.21:1 |
Values
| HEX | #C55D33 |
| RGB | rgb(197, 93, 51) |
| HSL | hsl(17, 59%, 49%) |
| OKLCH | oklch(59.9% 0.144 41.4) |
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 #C55D33 | 4.21:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #C55D33 | 4.98:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #C55D33 text on white | 4.21:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #C55D33 text on black | 4.98:1 | AA | Lc -33.2 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#FBF3F1
oklch(97% 0.009 34.3)
-
Step 100
100
#F7E6E0
oklch(93.7% 0.02 40.5)
-
Step 200
200
#F1D1C6
oklch(88.5% 0.039 39.9)
-
Step 300
300
#E9B29E
oklch(80.9% 0.07 40.9)
-
Step 400
400
#DC8868
oklch(70.8% 0.113 41.5)
-
Step 500
500 (this color)
#C55D33
oklch(59.9% 0.144 41.4)
-
Step 600
600
#BB4B18
oklch(55.5% 0.156 41.4)
-
Step 700
700
#A13B07
oklch(49% 0.146 41.3)
-
Step 800
800
#83320D
oklch(42.7% 0.121 41.4)
-
Step 900
900
#6A2D14
oklch(37.8% 0.095 41.4)
-
Step 950
950
#3E1B0D
oklch(27% 0.06 41.7)
#C55D33 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) | #7A6D2E | 0.137 |
| Deuteranopia (no green cones) | #938431 | 0.125 |
| Tritanopia (no blue cones) | #D84754 | 0.072 |
| Achromatopsia (no color) | #7B7B7B | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C55D33
#C55D33
oklch(59.9% 0.144 41.4)
- #008EAE
#008EAE
oklch(59.9% 0.11 221.2)
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 #C55D33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Terra Cotta #C9643B ΔE 0.018
- Terracotta #CA6641 ΔE 0.024
- Rusty Orange #CD5909 ΔE 0.025
- Rust Orange #C45508 ΔE 0.026
- Terracota #CB6843 ΔE 0.029
- Adobe #BD6C48 ΔE 0.034
- Copper #B66325 ΔE 0.034
- Burnt Orange #C04E01 ΔE 0.038
Use #C55D33 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.