#C66700
Closest named color: Rust (#CA6702). oklch(61.3% 0.15 55.8), rgb(198, 103, 0).
Aa
Black text reads best on this color (5.34:1).
About this color
#C66700 is a medium-dark, vivid orange. In OKLCH its lightness is 61%, its chroma 0.150 and its hue 56°. Its hue sits on the warm side of the wheel. The nearest named color is Rust (#CA6702), ΔE 0.008 away. Black text reads best on it, at 5.34:1.
| Hue family | Oranges |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Rust (#CA6702) |
| Black text | 5.34:1 |
| White text | 3.93:1 |
Values
| HEX | #C66700 |
| RGB | rgb(198, 103, 0) |
| HSL | hsl(31, 100%, 39%) |
| OKLCH | oklch(61.3% 0.15 55.8) |
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 #C66700 | 3.93:1 | AA large text | Lc -71.6 | Content text, not long reading |
| Black text on #C66700 | 5.34:1 | AA | Lc 37.9 | Non-text elements, placeholder text |
| #C66700 text on white | 3.93:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #C66700 text on black | 5.34:1 | AA | Lc -35.5 | 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
#FBF4EF
oklch(97.1% 0.01 58.2)
-
Step 100
100
#F6E7DD
oklch(93.7% 0.021 56.1)
-
Step 200
200
#EFD3C0
oklch(88.5% 0.041 56.3)
-
Step 300
300
#E6B593
oklch(80.9% 0.073 56.2)
-
Step 400
400
#D88C54
oklch(70.7% 0.117 55.8)
-
Step 500
500 (this color)
#C66700
oklch(61.3% 0.15 55.8)
-
Step 600
600
#AE5A00
oklch(55.7% 0.137 55.9)
-
Step 700
700
#934B00
oklch(49.2% 0.121 55.9)
-
Step 800
800
#793C00
oklch(42.6% 0.105 55.3)
-
Step 900
900
#653200
oklch(37.7% 0.092 56.3)
-
Step 950
950
#3D1D03
oklch(27.1% 0.062 55.6)
#C66700 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) | #837300 | 0.120 |
| Deuteranopia (no green cones) | #9A8900 | 0.109 |
| Tritanopia (no blue cones) | #DA5158 | 0.099 |
| Achromatopsia (no color) | #808080 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C66700
#C66700
oklch(61.3% 0.15 55.8)
- #008FC8
#008FC8
oklch(61.4% 0.132 235.7)
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 #C66700, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust #CA6702 ΔE 0.008
- Browny Orange #CA6B02 ΔE 0.012
- Orange Brown #BE6400 ΔE 0.017
- Tiger's Eye #BC6C25 ΔE 0.021
- Brown Orange #B96902 ΔE 0.024
- Chocolate #D2691E ΔE 0.026
- Rusty Orange #CD5909 ΔE 0.032
- Copper #B66325 ΔE 0.035
Use #C66700 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.