#CB643B
Closest named color: Terra Cotta (#C9643B). oklch(61.9% 0.142 41.4), rgb(203, 100, 59).
Aa
Black text reads best on this color (5.42:1).
About this color
#CB643B is a medium-dark, vivid orange. In OKLCH its lightness is 62%, its chroma 0.142 and its hue 41°. 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 5.42:1.
| Hue family | Oranges |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.142) |
| Temperature | warm |
| Nearest name | Terra Cotta (#C9643B) |
| Black text | 5.42:1 |
| White text | 3.87:1 |
Values
| HEX | #CB643B |
| RGB | rgb(203, 100, 59) |
| HSL | hsl(17, 58%, 51%) |
| OKLCH | oklch(61.9% 0.142 41.4) |
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 #CB643B | 3.87:1 | AA large text | Lc -71.1 | Content text, not long reading |
| Black text on #CB643B | 5.42:1 | AA | Lc 38.4 | Non-text elements, placeholder text |
| #CB643B text on white | 3.87:1 | AA large text | Lc 65.6 | Content text, not long reading |
| #CB643B text on black | 5.42:1 | 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
#F6E6E0
oklch(93.6% 0.019 41.8)
-
Step 200
200
#F1D1C6
oklch(88.5% 0.039 39.9)
-
Step 300
300
#E9B29E
oklch(80.9% 0.07 40.9)
-
Step 400
400
#DB8869
oklch(70.7% 0.111 41.2)
-
Step 500
500 (this color)
#CB643B
oklch(61.9% 0.142 41.4)
-
Step 600
600
#BB4C1A
oklch(55.7% 0.155 41.5)
-
Step 700
700
#A03C0B
oklch(49% 0.143 41.4)
-
Step 800
800
#82330F
oklch(42.7% 0.118 41.7)
-
Step 900
900
#692D15
oklch(37.6% 0.093 41.1)
-
Step 950
950
#3E1B0E
oklch(27% 0.059 40.5)
#CB643B 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) | #807337 | 0.134 |
| Deuteranopia (no green cones) | #998A39 | 0.123 |
| Tritanopia (no blue cones) | #DE4F5B | 0.071 |
| Achromatopsia (no color) | #818181 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB643B
#CB643B
oklch(61.9% 0.142 41.4)
- #0095B6
#0095B6
oklch(62% 0.114 220.9)
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 #CB643B, 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 0.006
- Terracota #CB6843 ΔE 0.010
- Adobe #BD6C48 ΔE 0.028
- Chocolate #D2691E ΔE 0.030
- Rusty Orange #CD5909 ΔE 0.032
- Rust #CA6702 ΔE 0.035
- Browny Orange #CA6B02 ΔE 0.040
Use #CB643B 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.