#66360D
Closest named color: Chestnut (#742802). oklch(38.7% 0.086 55.8), rgb(102, 54, 13).
Aa
White text reads best on this color (10.00:1).
About this color
#66360D is a dark, moderately saturated brown. In OKLCH its lightness is 39%, its chroma 0.086 and its hue 56°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.039 away. White text reads best on it, at 10.00:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #66360D |
| RGB | rgb(102, 54, 13) |
| HSL | hsl(28, 77%, 23%) |
| OKLCH | oklch(38.7% 0.086 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 #66360D | 10.00:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #66360D | 2.09:1 | Fails | Lc 11.1 | Not readable |
| #66360D text on white | 10.00:1 | AAA | Lc 92.9 | Preferred for body text |
| #66360D text on black | 2.09:1 | Fails | Lc -9.6 | Not readable |
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 900.
-
Step 50
50
#FAF4F0
oklch(97.1% 0.008 56.3)
-
Step 100
100
#F4E7DE
oklch(93.6% 0.019 57.2)
-
Step 200
200
#EDD4C3
oklch(88.6% 0.036 56.4)
-
Step 300
300
#E2B699
oklch(80.8% 0.065 55)
-
Step 400
400
#D28F60
oklch(70.7% 0.103 55.3)
-
Step 500
500
#C4712E
oklch(62.9% 0.131 55.7)
-
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 (this color)
#66360D
oklch(38.7% 0.086 55.8)
-
Step 950
950
#3A1E09
oklch(26.9% 0.054 54.6)
#66360D 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) | #443C06 | 0.069 |
| Deuteranopia (no green cones) | #50470D | 0.062 |
| Tritanopia (no blue cones) | #702B2E | 0.057 |
| Achromatopsia (no color) | #424242 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66360D
#66360D
oklch(38.7% 0.086 55.8)
- #004A6A
#004A6A
oklch(38.7% 0.083 235.7)
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 #66360D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.039
- Mud Brown #60460F ΔE 0.045
- Purple Brown #673A3F ΔE 0.061
- Reddy Brown #6E1005 ΔE 0.073
- Rust Brown #8B3103 ΔE 0.075
- Green Brown #544E03 ΔE 0.077
- Red Brown #8B2E16 ΔE 0.077
- Milk Chocolate #7F4E1E ΔE 0.085
Use #66360D 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.