#663E22
Closest named color: Mud Brown (#60460F). oklch(40.5% 0.07 54.4), rgb(102, 62, 34).
Aa
White text reads best on this color (9.22:1).
About this color
#663E22 is a dark, muted brown. In OKLCH its lightness is 41%, its chroma 0.070 and its hue 54°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.036 away. White text reads best on it, at 9.22:1.
| Hue family | Browns |
| Lightness | dark (41%) |
| Chroma | muted (0.070) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.27:1 |
| White text | 9.22:1 |
Values
| HEX | #663E22 |
| RGB | rgb(102, 62, 34) |
| HSL | hsl(25, 50%, 27%) |
| OKLCH | oklch(40.5% 0.07 54.4) |
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 #663E22 | 9.22:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #663E22 | 2.27:1 | Fails | Lc 12.9 | Not readable |
| #663E22 text on white | 9.22:1 | AAA | Lc 91.1 | Preferred for body text |
| #663E22 text on black | 2.27:1 | Fails | Lc -11.3 | 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 800.
-
Step 50
50
#F8F4F2
oklch(97% 0.005 48.7)
-
Step 100
100
#F0E8E3
oklch(93.6% 0.011 54.5)
-
Step 200
200
#E6D6CB
oklch(88.6% 0.023 56.9)
-
Step 300
300
#D6BAA8
oklch(80.8% 0.041 54.7)
-
Step 400
400
#C1967A
oklch(70.6% 0.065 54.5)
-
Step 500
500
#B17C58
oklch(63.2% 0.083 54.8)
-
Step 600
600
#9C643D
oklch(55.6% 0.09 54.6)
-
Step 700
700
#85532F
oklch(49.1% 0.084 55.1)
-
Step 800
800 (this color)
#663E22
oklch(40.5% 0.07 54.4)
-
Step 900
900
#583925
oklch(37.6% 0.054 53.2)
-
Step 950
950
#342216
oklch(27.1% 0.035 54.4)
#663E22 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) | #4A421F | 0.054 |
| Deuteranopia (no green cones) | #534B22 | 0.050 |
| Tritanopia (no blue cones) | #6F3637 | 0.046 |
| Achromatopsia (no color) | #474747 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663E22
#663E22
oklch(40.5% 0.07 54.4)
- #1B4F69
#1B4F69
oklch(40.6% 0.07 234.1)
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 #663E22, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.036
- Purple Brown #673A3F ΔE 0.047
- Chestnut #742802 ΔE 0.053
- Green Brown #544E03 ΔE 0.069
- Milk Chocolate #7F4E1E ΔE 0.070
- Brownish Purple #76424E ΔE 0.072
- Rust Brown #8B3103 ΔE 0.074
- Olive Brown #645403 ΔE 0.075
Use #663E22 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.