#C66A2A
Closest named color: Rust (#CA6702). oklch(62% 0.139 51.5), rgb(198, 106, 42).
Aa
Black text reads best on this color (5.49:1).
About this color
#C66A2A is a medium-dark, moderately saturated brown. In OKLCH its lightness is 62%, its chroma 0.139 and its hue 52°. Its hue sits on the warm side of the wheel. The nearest named color is Rust (#CA6702), ΔE 0.017 away. Black text reads best on it, at 5.49:1.
| Hue family | Browns |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.139) |
| Temperature | warm |
| Nearest name | Rust (#CA6702) |
| Black text | 5.49:1 |
| White text | 3.82:1 |
Values
| HEX | #C66A2A |
| RGB | rgb(198, 106, 42) |
| HSL | hsl(25, 65%, 47%) |
| OKLCH | oklch(62% 0.139 51.5) |
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 #C66A2A | 3.82:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #C66A2A | 5.49:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #C66A2A text on white | 3.82:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #C66A2A text on black | 5.49:1 | AA | Lc -36.4 | 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
#FBF4F0
oklch(97.1% 0.009 52.1)
-
Step 100
100
#F5E7DE
oklch(93.7% 0.02 55.1)
-
Step 200
200
#EED3C3
oklch(88.5% 0.037 52.7)
-
Step 300
300
#E5B599
oklch(80.9% 0.068 51.7)
-
Step 400
400
#D68C5F
oklch(70.6% 0.109 51.5)
-
Step 500
500 (this color)
#C66A2A
oklch(62% 0.139 51.5)
-
Step 600
600
#B35500
oklch(55.7% 0.144 51.3)
-
Step 700
700
#974700
oklch(49.2% 0.127 51.6)
-
Step 800
800
#7C3900
oklch(42.6% 0.11 51.5)
-
Step 900
900
#663109
oklch(37.7% 0.09 51.6)
-
Step 950
950
#3C1D09
oklch(27% 0.057 50.7)
#C66A2A 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) | #857621 | 0.117 |
| Deuteranopia (no green cones) | #9B8B29 | 0.107 |
| Tritanopia (no blue cones) | #D9565D | 0.086 |
| Achromatopsia (no color) | #828282 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C66A2A
#C66A2A
oklch(62% 0.139 51.5)
- #0092C4
#0092C4
oklch(62% 0.126 231.7)
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 #C66A2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust #CA6702 ΔE 0.017
- Browny Orange #CA6B02 ΔE 0.019
- Tiger's Eye #BC6C25 ΔE 0.019
- Chocolate #D2691E ΔE 0.022
- Terra Cotta #C9643B ΔE 0.024
- Terracotta #CA6641 ΔE 0.027
- Terracota #CB6843 ΔE 0.027
- Orange Brown #BE6400 ΔE 0.027
Use #C66A2A 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.