#664720
Closest named color: Mud Brown (#60460F). oklch(42.4% 0.069 70.3), rgb(102, 71, 32).
Aa
White text reads best on this color (8.44:1).
About this color
#664720 is a dark, muted brown. In OKLCH its lightness is 42%, its chroma 0.069 and its hue 70°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.020 away. White text reads best on it, at 8.44:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | muted (0.069) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.48:1 |
| White text | 8.44:1 |
Values
| HEX | #664720 |
| RGB | rgb(102, 71, 32) |
| HSL | hsl(33, 52%, 26%) |
| OKLCH | oklch(42.4% 0.069 70.3) |
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 #664720 | 8.44:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #664720 | 2.48:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #664720 text on white | 8.44:1 | AAA | Lc 89.0 | Fine for body text |
| #664720 text on black | 2.48:1 | Fails | Lc -13.3 | 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
#F8F5F2
oklch(97.2% 0.005 67.8)
-
Step 100
100
#EFE9E2
oklch(93.7% 0.011 71.9)
-
Step 200
200
#E3D7CA
oklch(88.5% 0.022 69.8)
-
Step 300
300
#D2BDA5
oklch(81% 0.041 70.9)
-
Step 400
400
#BB9A75
oklch(70.7% 0.064 69.7)
-
Step 500
500
#A98150
oklch(63.1% 0.082 71.1)
-
Step 600
600
#956A34
oklch(55.8% 0.089 70.3)
-
Step 700
700
#7F5826
oklch(49.2% 0.084 70.3)
-
Step 800
800 (this color)
#664720
oklch(42.4% 0.069 70.3)
-
Step 900
900
#543C20
oklch(37.6% 0.054 69.2)
-
Step 950
950
#312413
oklch(27.1% 0.034 73)
#664720 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) | #52491C | 0.038 |
| Deuteranopia (no green cones) | #595021 | 0.034 |
| Tritanopia (no blue cones) | #6F3F3E | 0.056 |
| Achromatopsia (no color) | #4D4D4D | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664720
#664720
oklch(42.4% 0.069 70.3)
- #2F5172
#2F5172
oklch(42.4% 0.068 249)
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 #664720, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.020
- Olive Brown #645403 ΔE 0.049
- Green Brown #544E03 ΔE 0.049
- Milk Chocolate #7F4E1E ΔE 0.053
- Medium Brown #7F5112 ΔE 0.059
- Purple Brown #673A3F ΔE 0.066
- Saddle Brown #8B4513 ΔE 0.070
- Mud #735C12 ΔE 0.071
Use #664720 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.