#CA551B
Closest named color: Rusty Orange (#CD5909). oklch(59.3% 0.163 42.8), rgb(202, 85, 27).
Aa
Black text reads best on this color (4.82:1).
About this color
#CA551B is a medium-dark, vivid orange. In OKLCH its lightness is 59%, its chroma 0.163 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Orange (#CD5909), ΔE 0.014 away. Black text reads best on it, at 4.82:1.
| Hue family | Oranges |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.163) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 4.82:1 |
| White text | 4.35:1 |
Values
| HEX | #CA551B |
| RGB | rgb(202, 85, 27) |
| HSL | hsl(20, 76%, 45%) |
| OKLCH | oklch(59.3% 0.163 42.8) |
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 #CA551B | 4.35:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #CA551B | 4.82:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #CA551B text on white | 4.35:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #CA551B text on black | 4.82:1 | 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
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F7E6DF
oklch(93.7% 0.021 43.9)
-
Step 200
200
#F2D1C4
oklch(88.5% 0.041 42.7)
-
Step 300
300
#EAB29B
oklch(80.9% 0.073 43.4)
-
Step 400
400
#DD8764
oklch(70.6% 0.117 42.7)
-
Step 500
500
#D26636
oklch(63.2% 0.15 43)
-
Step 600
600 (this color)
#CA551B
oklch(59.3% 0.163 42.8)
-
Step 700
700
#A13C00
oklch(49.1% 0.146 42.8)
-
Step 800
800
#843102
oklch(42.7% 0.125 43.1)
-
Step 900
900
#6B2C0F
oklch(37.7% 0.099 42.6)
-
Step 950
950
#3F1B0B
oklch(27.1% 0.062 43.2)
#CA551B 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) | #77690F | 0.156 |
| Deuteranopia (no green cones) | #938315 | 0.142 |
| Tritanopia (no blue cones) | #DE384A | 0.081 |
| Achromatopsia (no color) | #797979 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CA551B
#CA551B
oklch(59.3% 0.163 42.8)
- #008CAD
#008CAD
oklch(59.3% 0.11 222.2)
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 #CA551B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Orange #CD5909 ΔE 0.014
- Rust Orange #C45508 ΔE 0.015
- Burnt Orange #C04E01 ΔE 0.027
- Brick Orange #C14A09 ΔE 0.030
- Terra Cotta #C9643B ΔE 0.033
- Deep Orange #DC4D01 ΔE 0.034
- Terracotta #CA6641 ΔE 0.039
- Burnt Siena #B75203 ΔE 0.040
Use #CA551B 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.