#CA6437
Closest named color: Terra Cotta (#C9643B). oklch(61.7% 0.143 43), rgb(202, 100, 55).
Aa
Black text reads best on this color (5.38:1).
About this color
#CA6437 is a medium-dark, vivid orange. In OKLCH its lightness is 62%, its chroma 0.143 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 5.38:1.
| Hue family | Oranges |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Terra Cotta (#C9643B) |
| Black text | 5.38:1 |
| White text | 3.89:1 |
Values
| HEX | #CA6437 |
| RGB | rgb(202, 100, 55) |
| HSL | hsl(18, 58%, 50%) |
| OKLCH | oklch(61.7% 0.143 43) |
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 #CA6437 | 3.89:1 | AA large text | Lc -71.4 | Content text, not long reading |
| Black text on #CA6437 | 5.38:1 | AA | Lc 38.2 | Non-text elements, placeholder text |
| #CA6437 text on white | 3.89:1 | AA large text | Lc 65.9 | Content text, not long reading |
| #CA6437 text on black | 5.38:1 | AA | Lc -35.8 | 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
#F1D2C5
oklch(88.6% 0.039 44.1)
-
Step 300
300
#E8B39D
oklch(80.9% 0.069 43.6)
-
Step 400
400
#DB8967
oklch(70.8% 0.111 43.1)
-
Step 500
500 (this color)
#CA6437
oklch(61.7% 0.143 43)
-
Step 600
600
#BA4D14
oklch(55.6% 0.155 43.2)
-
Step 700
700
#A03D02
oklch(49.1% 0.144 43.2)
-
Step 800
800
#82330A
oklch(42.7% 0.119 43)
-
Step 900
900
#692E13
oklch(37.8% 0.093 43.1)
-
Step 950
950
#3E1B0D
oklch(27% 0.06 41.7)
#CA6437 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) | #807332 | 0.133 |
| Deuteranopia (no green cones) | #998A35 | 0.122 |
| Tritanopia (no blue cones) | #DD4F5A | 0.074 |
| Achromatopsia (no color) | #818181 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CA6437
#CA6437
oklch(61.7% 0.143 43)
- #0094B7
#0094B7
oklch(61.8% 0.115 222.4)
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 #CA6437, 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 0.009
- Terracota #CB6843 ΔE 0.013
- Adobe #BD6C48 ΔE 0.028
- Chocolate #D2691E ΔE 0.028
- Rusty Orange #CD5909 ΔE 0.029
- Rust #CA6702 ΔE 0.031
- Browny Orange #CA6B02 ΔE 0.037
Use #CA6437 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.