#CA5901
Closest named color: Rusty Orange (#CD5909). oklch(59.7% 0.164 47.5), rgb(202, 89, 1).
Aa
Black text reads best on this color (4.94:1).
About this color
#CA5901 is a medium-dark, vivid orange. In OKLCH its lightness is 60%, its chroma 0.164 and its hue 48°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Orange (#CD5909), ΔE 0.006 away. Black text reads best on it, at 4.94:1.
| Hue family | Oranges |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.164) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 4.94:1 |
| White text | 4.25:1 |
Values
| HEX | #CA5901 |
| RGB | rgb(202, 89, 1) |
| HSL | hsl(26, 99%, 40%) |
| OKLCH | oklch(59.7% 0.164 47.5) |
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 #CA5901 | 4.25:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #CA5901 | 4.94:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #CA5901 text on white | 4.25:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #CA5901 text on black | 4.94:1 | AA | Lc -33.1 | 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
#FCF3EF
oklch(97% 0.011 45.7)
-
Step 100
100
#F8E6DD
oklch(93.7% 0.023 48.5)
-
Step 200
200
#F3D1C0
oklch(88.5% 0.045 48.2)
-
Step 300
300
#ECB194
oklch(80.8% 0.08 47.3)
-
Step 400
400
#E18656
oklch(70.8% 0.129 47.6)
-
Step 500
500 (this color)
#CA5901
oklch(59.7% 0.164 47.5)
-
Step 600
600
#B85000
oklch(55.7% 0.153 47.4)
-
Step 700
700
#9B4200
oklch(49% 0.135 47.3)
-
Step 800
800
#803600
oklch(42.8% 0.117 47.8)
-
Step 900
900
#6C2C00
oklch(37.8% 0.104 47.5)
-
Step 950
950
#401A04
oklch(27% 0.068 47.6)
#CA5901 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) | #7A6B00 | 0.148 |
| Deuteranopia (no green cones) | #968400 | 0.132 |
| Tritanopia (no blue cones) | #DE3D4C | 0.090 |
| Achromatopsia (no color) | #7B7B7B | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CA5901
#CA5901
oklch(59.7% 0.164 47.5)
- #008CB5
#008CB5
oklch(59.7% 0.116 227.5)
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 #CA5901, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Orange #CD5909 ΔE 0.006
- Rust Orange #C45508 ΔE 0.016
- Rust #CA6702 ΔE 0.030
- Orange Brown #BE6400 ΔE 0.031
- Burnt Orange #C04E01 ΔE 0.032
- Terra Cotta #C9643B ΔE 0.034
- Deep Orange #DC4D01 ΔE 0.038
- Brick Orange #C14A09 ΔE 0.038
Use #CA5901 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.