#C55D00
Closest named color: Rusty Orange (#CD5909). oklch(59.6% 0.156 50.7), rgb(197, 93, 0).
Aa
Black text reads best on this color (4.93:1).
About this color
#C55D00 is a medium-dark, vivid orange. In OKLCH its lightness is 60%, its chroma 0.156 and its hue 51°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Orange (#CD5909), ΔE 0.017 away. Black text reads best on it, at 4.93:1.
| Hue family | Oranges |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 4.93:1 |
| White text | 4.25:1 |
Values
| HEX | #C55D00 |
| RGB | rgb(197, 93, 0) |
| HSL | hsl(28, 100%, 39%) |
| OKLCH | oklch(59.6% 0.156 50.7) |
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 #C55D00 | 4.25:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #C55D00 | 4.93:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #C55D00 text on white | 4.25:1 | AA large text | Lc 68.7 | Content text, not long reading |
| #C55D00 text on black | 4.93:1 | AA | Lc -33.0 | 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
#FBF4EF
oklch(97.1% 0.01 58.2)
-
Step 100
100
#F7E6DD
oklch(93.6% 0.022 49.9)
-
Step 200
200
#F1D2C1
oklch(88.5% 0.042 50.6)
-
Step 300
300
#EAB394
oklch(80.9% 0.077 50.7)
-
Step 400
400
#DD8956
oklch(70.8% 0.123 50.9)
-
Step 500
500 (this color)
#C55D00
oklch(59.6% 0.156 50.7)
-
Step 600
600
#B45400
oklch(55.7% 0.146 50.5)
-
Step 700
700
#984600
oklch(49.2% 0.129 50.6)
-
Step 800
800
#7D3900
oklch(42.8% 0.111 51.1)
-
Step 900
900
#692E00
oklch(37.6% 0.099 50.4)
-
Step 950
950
#3E1B04
oklch(26.9% 0.064 50.5)
#C55D00 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) | #7C6C00 | 0.134 |
| Deuteranopia (no green cones) | #958400 | 0.122 |
| Tritanopia (no blue cones) | #D9444F | 0.093 |
| Achromatopsia (no color) | #7B7B7B | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C55D00
#C55D00
oklch(59.6% 0.156 50.7)
- #008BB9
#008BB9
oklch(59.7% 0.12 230.6)
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 #C55D00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Orange #CD5909 ΔE 0.017
- Rust Orange #C45508 ΔE 0.018
- Orange Brown #BE6400 ΔE 0.019
- Rust #CA6702 ΔE 0.025
- Copper #B66325 ΔE 0.029
- Brown Orange #B96902 ΔE 0.033
- Tiger's Eye #BC6C25 ΔE 0.033
- Browny Orange #CA6B02 ΔE 0.034
Use #C55D00 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.