#CB5E37
Closest named color: Terra Cotta (#C9643B). oklch(61% 0.149 39.6), rgb(203, 94, 55).
Aa
Black text reads best on this color (5.19:1).
About this color
#CB5E37 is a medium-dark, vivid red. In OKLCH its lightness is 61%, its chroma 0.149 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Terra Cotta (#C9643B), ΔE 0.012 away. Black text reads best on it, at 5.19:1.
| Hue family | Reds |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.149) |
| Temperature | warm |
| Nearest name | Terra Cotta (#C9643B) |
| Black text | 5.19:1 |
| White text | 4.04:1 |
Values
| HEX | #CB5E37 |
| RGB | rgb(203, 94, 55) |
| HSL | hsl(16, 59%, 51%) |
| OKLCH | oklch(61% 0.149 39.6) |
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 #CB5E37 | 4.04:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #CB5E37 | 5.19:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #CB5E37 text on white | 4.04:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #CB5E37 text on black | 5.19:1 | AA | Lc -34.6 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F7E6E0
oklch(93.7% 0.02 40.5)
-
Step 200
200
#F2D1C6
oklch(88.5% 0.04 39.3)
-
Step 300
300
#EBB19E
oklch(80.9% 0.073 38.9)
-
Step 400
400
#DE8668
oklch(70.7% 0.117 39.5)
-
Step 500
500 (this color)
#CB5E37
oklch(61% 0.149 39.6)
-
Step 600
600
#BE4819
oklch(55.6% 0.162 39.5)
-
Step 700
700
#A33808
oklch(49% 0.15 39.5)
-
Step 800
800
#85300D
oklch(42.8% 0.125 39.8)
-
Step 900
900
#6B2C14
oklch(37.8% 0.097 40.2)
-
Step 950
950
#3F1A0D
oklch(27% 0.062 39.6)
#CB5E37 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) | #7C6F32 | 0.144 |
| Deuteranopia (no green cones) | #968834 | 0.133 |
| Tritanopia (no blue cones) | #DF4755 | 0.070 |
| Achromatopsia (no color) | #7E7E7E | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB5E37
#CB5E37
oklch(61% 0.149 39.6)
- #0092B0
#0092B0
oklch(61% 0.11 219.2)
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 #CB5E37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Terra Cotta #C9643B ΔE 0.012
- Terracotta #CA6641 ΔE 0.017
- Terracota #CB6843 ΔE 0.021
- Rusty Orange #CD5909 ΔE 0.026
- Rust Orange #C45508 ΔE 0.034
- Adobe #BD6C48 ΔE 0.036
- Chocolate #D2691E ΔE 0.038
- Rust #CA6702 ΔE 0.040
Use #CB5E37 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.