#CA580B
Closest named color: Rusty Orange (#CD5909). oklch(59.6% 0.163 46.2), rgb(202, 88, 11).
Aa
Black text reads best on this color (4.91:1).
About this color
#CA580B is a medium-dark, vivid orange. In OKLCH its lightness is 60%, its chroma 0.163 and its hue 46°. 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 4.91:1.
| Hue family | Oranges |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.163) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #CA580B |
| RGB | rgb(202, 88, 11) |
| HSL | hsl(24, 90%, 42%) |
| OKLCH | oklch(59.6% 0.163 46.2) |
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 #CA580B | 4.27:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #CA580B | 4.91:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #CA580B text on white | 4.27:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #CA580B text on black | 4.91:1 | AA | Lc -32.9 | 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
#F8E6DD
oklch(93.7% 0.023 48.5)
-
Step 200
200
#F3D1C1
oklch(88.5% 0.044 46.7)
-
Step 300
300
#EDB195
oklch(80.9% 0.08 46.1)
-
Step 400
400
#E18558
oklch(70.6% 0.128 46.1)
-
Step 500
500 (this color)
#CA580B
oklch(59.6% 0.163 46.2)
-
Step 600
600
#B94E00
oklch(55.5% 0.156 46.2)
-
Step 700
700
#9D4100
oklch(49.2% 0.138 46.2)
-
Step 800
800
#813400
oklch(42.6% 0.119 46.2)
-
Step 900
900
#6D2B00
oklch(37.8% 0.106 46.3)
-
Step 950
950
#401A05
oklch(27% 0.067 46.7)
#CA580B 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) | #796A00 | 0.151 |
| Deuteranopia (no green cones) | #958401 | 0.136 |
| Tritanopia (no blue cones) | #DE3C4B | 0.087 |
| Achromatopsia (no color) | #7A7A7A | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CA580B
#CA580B
oklch(59.6% 0.163 46.2)
- #008CB3
#008CB3
oklch(59.6% 0.114 226.2)
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 #CA580B, 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 0.014
- Burnt Orange #C04E01 ΔE 0.030
- Terra Cotta #C9643B ΔE 0.033
- Orange Brown #BE6400 ΔE 0.033
- Rust #CA6702 ΔE 0.033
- Brick Orange #C14A09 ΔE 0.036
- Deep Orange #DC4D01 ΔE 0.036
Use #CA580B 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.