#CA551F
Closest named color: Rusty Orange (#CD5909). oklch(59.3% 0.162 42), rgb(202, 85, 31).
Aa
Black text reads best on this color (4.83:1).
About this color
#CA551F is a medium-dark, vivid orange. In OKLCH its lightness is 59%, its chroma 0.162 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Orange (#CD5909), ΔE 0.016 away. Black text reads best on it, at 4.83:1.
| Hue family | Oranges |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.162) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 4.83:1 |
| White text | 4.34:1 |
Values
| HEX | #CA551F |
| RGB | rgb(202, 85, 31) |
| HSL | hsl(19, 73%, 46%) |
| OKLCH | oklch(59.3% 0.162 42) |
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 #CA551F | 4.34:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #CA551F | 4.83:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #CA551F text on white | 4.34:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #CA551F text on black | 4.83:1 | 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
#F2D1C5
oklch(88.5% 0.041 41)
-
Step 300
300
#EAB29C
oklch(80.9% 0.072 42.4)
-
Step 400
400
#DD8765
oklch(70.7% 0.116 42.2)
-
Step 500
500
#D26638
oklch(63.2% 0.149 42.3)
-
Step 600
600 (this color)
#CA551F
oklch(59.3% 0.162 42)
-
Step 700
700
#A23B00
oklch(49.2% 0.148 42.2)
-
Step 800
800
#843105
oklch(42.7% 0.124 42.4)
-
Step 900
900
#6B2C11
oklch(37.8% 0.098 41.7)
-
Step 950
950
#3F1B0C
oklch(27.1% 0.061 42.2)
#CA551F 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) | #766915 | 0.157 |
| Deuteranopia (no green cones) | #93831A | 0.142 |
| Tritanopia (no blue cones) | #DE394B | 0.079 |
| Achromatopsia (no color) | #797979 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CA551F
#CA551F
oklch(59.3% 0.162 42)
- #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 #CA551F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Orange #CD5909 ΔE 0.016
- Rust Orange #C45508 ΔE 0.016
- Burnt Orange #C04E01 ΔE 0.028
- Brick Orange #C14A09 ΔE 0.030
- Terra Cotta #C9643B ΔE 0.032
- Deep Orange #DC4D01 ΔE 0.034
- Terracotta #CA6641 ΔE 0.038
- Burnt Siena #B75203 ΔE 0.041
Use #CA551F 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.