#C55A10
Closest named color: Rust Orange (#C45508). oklch(59.2% 0.156 47.7), rgb(197, 90, 16).
Aa
Black text reads best on this color (4.84:1).
About this color
#C55A10 is a medium-dark, vivid orange. In OKLCH its lightness is 59%, its chroma 0.156 and its hue 48°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Orange (#C45508), ΔE 0.011 away. Black text reads best on it, at 4.84:1.
| Hue family | Oranges |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Rust Orange (#C45508) |
| Black text | 4.84:1 |
| White text | 4.33:1 |
Values
| HEX | #C55A10 |
| RGB | rgb(197, 90, 16) |
| HSL | hsl(25, 85%, 42%) |
| OKLCH | oklch(59.2% 0.156 47.7) |
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 #C55A10 | 4.33:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #C55A10 | 4.84:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #C55A10 text on white | 4.33:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #C55A10 text on black | 4.84:1 | AA | Lc -32.3 | 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 600.
-
Step 50
50
#FBF4F0
oklch(97.1% 0.009 52.1)
-
Step 100
100
#F6E6DE
oklch(93.6% 0.021 48.5)
-
Step 200
200
#F0D2C3
oklch(88.5% 0.039 48.3)
-
Step 300
300
#E7B49A
oklch(81% 0.069 48.3)
-
Step 400
400
#DA8A61
oklch(70.7% 0.113 47.5)
-
Step 500
500
#CD6A31
oklch(63% 0.143 47.7)
-
Step 600
600 (this color)
#C55A10
oklch(59.2% 0.156 47.7)
-
Step 700
700
#9B4300
oklch(49.2% 0.134 47.9)
-
Step 800
800
#803600
oklch(42.8% 0.117 47.8)
-
Step 900
900
#682F0B
oklch(37.7% 0.094 48)
-
Step 950
950
#3D1C09
oklch(26.9% 0.059 48.1)
#C55A10 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) | #796A00 | 0.141 |
| Deuteranopia (no green cones) | #938309 | 0.129 |
| Tritanopia (no blue cones) | #D9414D | 0.086 |
| Achromatopsia (no color) | #797979 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C55A10
#C55A10
oklch(59.2% 0.156 47.7)
- #008AB3
#008AB3
oklch(59.1% 0.115 227.8)
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 #C55A10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Orange #C45508 ΔE 0.011
- Rusty Orange #CD5909 ΔE 0.015
- Orange Brown #BE6400 ΔE 0.026
- Burnt Orange #C04E01 ΔE 0.027
- Copper #B66325 ΔE 0.030
- Rust #CA6702 ΔE 0.033
- Terra Cotta #C9643B ΔE 0.033
- Burnt Siena #B75203 ΔE 0.034
Use #C55A10 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.