#663116
Closest named color: Chestnut (#742802). oklch(37.8% 0.086 45.6), rgb(102, 49, 22).
Aa
White text reads best on this color (10.41:1).
About this color
#663116 is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.086 and its hue 46°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.032 away. White text reads best on it, at 10.41:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.01:1 |
| White text | 10.41:1 |
Values
| HEX | #663116 |
| RGB | rgb(102, 49, 22) |
| HSL | hsl(20, 65%, 24%) |
| OKLCH | oklch(37.8% 0.086 45.6) |
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 #663116 | 10.41:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #663116 | 2.01:1 | Fails | Lc 10.2 | Not readable |
| #663116 text on white | 10.41:1 | AAA | Lc 93.8 | Preferred for body text |
| #663116 text on black | 2.01:1 | Fails | Lc -8.8 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F5E6E0
oklch(93.5% 0.018 43.2)
-
Step 200
200
#EED2C6
oklch(88.4% 0.035 44.6)
-
Step 300
300
#E5B49E
oklch(80.9% 0.065 45.4)
-
Step 400
400
#D68C69
oklch(70.8% 0.103 45.9)
-
Step 500
500
#C96D3F
oklch(63.1% 0.131 45.9)
-
Step 600
600
#B4521C
oklch(55.5% 0.142 45.3)
-
Step 700
700
#9B420C
oklch(49.1% 0.133 45.4)
-
Step 800
800
#7E3710
oklch(42.7% 0.11 45.2)
-
Step 900
900 (this color)
#663116
oklch(37.8% 0.086 45.6)
-
Step 950
950
#3C1D0E
oklch(27.1% 0.055 45.4)
#663116 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) | #403813 | 0.077 |
| Deuteranopia (no green cones) | #4D4415 | 0.070 |
| Tritanopia (no blue cones) | #70262B | 0.047 |
| Achromatopsia (no color) | #404040 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663116
#663116
oklch(37.8% 0.086 45.6)
- #00495F
#00495F
oklch(37.8% 0.072 226.2)
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 #663116, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.032
- Purple Brown #673A3F ΔE 0.054
- Reddy Brown #6E1005 ΔE 0.059
- Mud Brown #60460F ΔE 0.061
- Blood #770001 ΔE 0.072
- Red Brown #8B2E16 ΔE 0.076
- Maroon #800000 ΔE 0.076
- Rust Brown #8B3103 ΔE 0.077
Use #663116 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.