#CA6539
Closest named color: Terra Cotta (#C9643B). oklch(61.9% 0.141 42.9), rgb(202, 101, 57).
Aa
Black text reads best on this color (5.43:1).
About this color
#CA6539 is a medium-dark, vivid orange. In OKLCH its lightness is 62%, its chroma 0.141 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Terra Cotta (#C9643B), ΔE 0.004 away. Black text reads best on it, at 5.43:1.
| Hue family | Oranges |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.141) |
| Temperature | warm |
| Nearest name | Terra Cotta (#C9643B) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #CA6539 |
| RGB | rgb(202, 101, 57) |
| HSL | hsl(18, 58%, 51%) |
| OKLCH | oklch(61.9% 0.141 42.9) |
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 #CA6539 | 3.86:1 | AA large text | Lc -71.1 | Content text, not long reading |
| Black text on #CA6539 | 5.43:1 | AA | Lc 38.5 | Non-text elements, placeholder text |
| #CA6539 text on white | 3.86:1 | AA large text | Lc 65.6 | Content text, not long reading |
| #CA6539 text on black | 5.43:1 | AA | Lc -36.0 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6DF
oklch(93.6% 0.02 45.3)
-
Step 200
200
#F0D2C5
oklch(88.5% 0.038 44.8)
-
Step 300
300
#E8B39D
oklch(80.9% 0.069 43.6)
-
Step 400
400
#DA8968
oklch(70.7% 0.11 42.8)
-
Step 500
500 (this color)
#CA6539
oklch(61.9% 0.141 42.9)
-
Step 600
600
#BA4D17
oklch(55.6% 0.154 42.7)
-
Step 700
700
#A03D06
oklch(49.1% 0.143 42.6)
-
Step 800
800
#82330C
oklch(42.7% 0.119 42.5)
-
Step 900
900
#682E14
oklch(37.6% 0.091 42.9)
-
Step 950
950
#3D1C0D
oklch(27% 0.057 44)
#CA6539 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) | #817434 | 0.131 |
| Deuteranopia (no green cones) | #998A37 | 0.121 |
| Tritanopia (no blue cones) | #DD505B | 0.073 |
| Achromatopsia (no color) | #828282 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CA6539
#CA6539
oklch(61.9% 0.141 42.9)
- #0094B8
#0094B8
oklch(61.9% 0.115 223)
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 #CA6539, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Terra Cotta #C9643B ΔE 0.004
- Terracotta #CA6641 ΔE 0.008
- Terracota #CB6843 ΔE 0.011
- Adobe #BD6C48 ΔE 0.027
- Chocolate #D2691E ΔE 0.028
- Rusty Orange #CD5909 ΔE 0.031
- Rust #CA6702 ΔE 0.032
- Browny Orange #CA6B02 ΔE 0.037
Use #CA6539 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.