#C66307
Closest named color: Rust (#CA6702). oklch(60.7% 0.152 53), rgb(198, 99, 7).
Aa
Black text reads best on this color (5.18:1).
About this color
#C66307 is a medium-dark, vivid orange. In OKLCH its lightness is 61%, its chroma 0.152 and its hue 53°. Its hue sits on the warm side of the wheel. The nearest named color is Rust (#CA6702), ΔE 0.013 away. Black text reads best on it, at 5.18:1.
| Hue family | Oranges |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.152) |
| Temperature | warm |
| Nearest name | Rust (#CA6702) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #C66307 |
| RGB | rgb(198, 99, 7) |
| HSL | hsl(29, 93%, 40%) |
| OKLCH | oklch(60.7% 0.152 53) |
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 #C66307 | 4.04:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #C66307 | 5.18:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #C66307 text on white | 4.04:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #C66307 text on black | 5.18:1 | 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
#FBF4EF
oklch(97.1% 0.01 58.2)
-
Step 100
100
#F6E6DD
oklch(93.5% 0.021 51.5)
-
Step 200
200
#F0D2C0
oklch(88.4% 0.042 52.9)
-
Step 300
300
#E8B494
oklch(80.9% 0.075 53)
-
Step 400
400
#DA8B56
oklch(70.8% 0.119 53.5)
-
Step 500
500 (this color)
#C66307
oklch(60.7% 0.152 53)
-
Step 600
600
#B15700
oklch(55.7% 0.141 53.1)
-
Step 700
700
#954800
oklch(49% 0.124 53)
-
Step 800
800
#7B3A00
oklch(42.6% 0.109 52.7)
-
Step 900
900
#673000
oklch(37.6% 0.095 53.2)
-
Step 950
950
#3D1C04
oklch(26.9% 0.062 52.9)
#C66307 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) | #807000 | 0.127 |
| Deuteranopia (no green cones) | #988702 | 0.115 |
| Tritanopia (no blue cones) | #DA4C54 | 0.095 |
| Achromatopsia (no color) | #7E7E7E | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C66307
#C66307
oklch(60.7% 0.152 53)
- #008EC1
#008EC1
oklch(60.8% 0.125 232.9)
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 #C66307, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust #CA6702 ΔE 0.013
- Orange Brown #BE6400 ΔE 0.015
- Browny Orange #CA6B02 ΔE 0.021
- Rusty Orange #CD5909 ΔE 0.024
- Tiger's Eye #BC6C25 ΔE 0.024
- Brown Orange #B96902 ΔE 0.027
- Chocolate #D2691E ΔE 0.029
- Copper #B66325 ΔE 0.031
Use #C66307 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.