#C55A23
Closest named color: Rust Orange (#C45508). oklch(59.3% 0.152 44.4), rgb(197, 90, 35).
Aa
Black text reads best on this color (4.86:1).
About this color
#C55A23 is a medium-dark, vivid orange. In OKLCH its lightness is 59%, its chroma 0.152 and its hue 44°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Orange (#C45508), ΔE 0.014 away. Black text reads best on it, at 4.86:1.
| Hue family | Oranges |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.152) |
| Temperature | warm |
| Nearest name | Rust Orange (#C45508) |
| Black text | 4.86:1 |
| White text | 4.32:1 |
Values
| HEX | #C55A23 |
| RGB | rgb(197, 90, 35) |
| HSL | hsl(20, 70%, 45%) |
| OKLCH | oklch(59.3% 0.152 44.4) |
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 #C55A23 | 4.32:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #C55A23 | 4.86:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #C55A23 text on white | 4.32:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #C55A23 text on black | 4.86:1 | AA | Lc -32.4 | 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
#F6E6DF
oklch(93.6% 0.02 45.3)
-
Step 200
200
#F0D2C5
oklch(88.5% 0.038 44.8)
-
Step 300
300
#E7B39D
oklch(80.8% 0.068 44)
-
Step 400
400
#D98A67
oklch(70.7% 0.109 44.5)
-
Step 500
500
#CD6A3B
oklch(63.1% 0.14 44.6)
-
Step 600
600 (this color)
#C55A23
oklch(59.3% 0.152 44.4)
-
Step 700
700
#9F3F01
oklch(49.2% 0.141 44.5)
-
Step 800
800
#813409
oklch(42.7% 0.118 44.1)
-
Step 900
900
#682F13
oklch(37.8% 0.091 44.4)
-
Step 950
950
#3D1C0D
oklch(27% 0.057 44)
#C55A23 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) | #786B1A | 0.143 |
| Deuteranopia (no green cones) | #928320 | 0.130 |
| Tritanopia (no blue cones) | #D8424F | 0.079 |
| Achromatopsia (no color) | #7A7A7A | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C55A23
#C55A23
oklch(59.3% 0.152 44.4)
- #008BAF
#008BAF
oklch(59.2% 0.112 224.4)
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 #C55A23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Orange #C45508 ΔE 0.014
- Rusty Orange #CD5909 ΔE 0.017
- Terra Cotta #C9643B ΔE 0.027
- Burnt Orange #C04E01 ΔE 0.028
- Copper #B66325 ΔE 0.032
- Orange Brown #BE6400 ΔE 0.033
- Brick Orange #C14A09 ΔE 0.034
- Terracotta #CA6641 ΔE 0.034
Use #C55A23 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.