#C9581B
Closest named color: Rusty Orange (#CD5909). oklch(59.5% 0.159 44.3), rgb(201, 88, 27).
Aa
Black text reads best on this color (4.89:1).
About this color
#C9581B is a medium-dark, vivid orange. In OKLCH its lightness is 60%, its chroma 0.159 and its hue 44°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Orange (#CD5909), ΔE 0.011 away. Black text reads best on it, at 4.89:1.
| Hue family | Oranges |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.159) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 4.89:1 |
| White text | 4.28:1 |
Values
| HEX | #C9581B |
| RGB | rgb(201, 88, 27) |
| HSL | hsl(21, 76%, 45%) |
| OKLCH | oklch(59.5% 0.159 44.3) |
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 #C9581B | 4.28:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #C9581B | 4.89:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #C9581B text on white | 4.28:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #C9581B text on black | 4.89:1 | AA | Lc -32.7 | 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
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F8E6DE
oklch(93.7% 0.023 45.6)
-
Step 200
200
#F3D1C2
oklch(88.5% 0.043 45.2)
-
Step 300
300
#ECB198
oklch(80.9% 0.077 44)
-
Step 400
400
#E0865D
oklch(70.7% 0.124 44.7)
-
Step 500
500 (this color)
#C9581B
oklch(59.5% 0.159 44.3)
-
Step 600
600
#BC4B00
oklch(55.6% 0.161 44.3)
-
Step 700
700
#9F3E00
oklch(49.1% 0.142 44.2)
-
Step 800
800
#833200
oklch(42.7% 0.123 44.4)
-
Step 900
900
#6D2B06
oklch(37.9% 0.104 44.4)
-
Step 950
950
#401A07
oklch(27.1% 0.066 44.8)
#C9581B 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) | #786A0E | 0.151 |
| Deuteranopia (no green cones) | #948416 | 0.136 |
| Tritanopia (no blue cones) | #DD3D4D | 0.083 |
| Achromatopsia (no color) | #7A7A7A | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C9581B
#C9581B
oklch(59.5% 0.159 44.3)
- #008CB0
#008CB0
oklch(59.5% 0.112 224.2)
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 #C9581B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Orange #CD5909 ΔE 0.011
- Rust Orange #C45508 ΔE 0.014
- Terra Cotta #C9643B ΔE 0.029
- Burnt Orange #C04E01 ΔE 0.029
- Brick Orange #C14A09 ΔE 0.034
- Orange Brown #BE6400 ΔE 0.036
- Terracotta #CA6641 ΔE 0.036
- Rust #CA6702 ΔE 0.037
Use #C9581B 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.