#664E2D
Closest named color: Mud Brown (#60460F). oklch(44.1% 0.058 74.2), rgb(102, 78, 45).
Aa
White text reads best on this color (7.79:1).
About this color
#664E2D is a dark, muted brown. In OKLCH its lightness is 44%, its chroma 0.058 and its hue 74°. 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 7.79:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | muted (0.058) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.69:1 |
| White text | 7.79:1 |
Values
| HEX | #664E2D |
| RGB | rgb(102, 78, 45) |
| HSL | hsl(35, 39%, 29%) |
| OKLCH | oklch(44.1% 0.058 74.2) |
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 #664E2D | 7.79:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #664E2D | 2.69:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #664E2D text on white | 7.79:1 | AAA | Lc 87.0 | Fine for body text |
| #664E2D text on black | 2.69:1 | Fails | Lc -15.1 | Dividers and decoration only |
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
#F7F5F2
oklch(97.1% 0.005 78.3)
-
Step 100
100
#EEE9E3
oklch(93.6% 0.01 72.7)
-
Step 200
200
#E1D8CC
oklch(88.6% 0.019 75.3)
-
Step 300
300
#CEBEA9
oklch(80.9% 0.034 74.7)
-
Step 400
400
#B59C7B
oklch(70.7% 0.054 74.4)
-
Step 500
500
#A3835A
oklch(63% 0.069 72.9)
-
Step 600
600
#8E6D3F
oklch(55.7% 0.075 74.4)
-
Step 700
700
#785B31
oklch(49.2% 0.07 75.1)
-
Step 800
800 (this color)
#664E2D
oklch(44.1% 0.058 74.2)
-
Step 900
900
#503E26
oklch(37.7% 0.045 73.7)
-
Step 950
950
#2F2416
oklch(26.9% 0.029 72.8)
#664E2D 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) | #574F2A | 0.027 |
| Deuteranopia (no green cones) | #5D542E | 0.023 |
| Tritanopia (no blue cones) | #6E4846 | 0.048 |
| Achromatopsia (no color) | #525252 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664E2D
#664E2D
oklch(44.1% 0.058 74.2)
- #3C5472
#3C5472
oklch(44% 0.058 254.4)
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 #664E2D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.036
- Olive Brown #645403 ΔE 0.044
- Milk Chocolate #7F4E1E ΔE 0.047
- Medium Brown #7F5112 ΔE 0.052
- Green Brown #544E03 ΔE 0.053
- Mud #735C12 ΔE 0.059
- Greeny Brown #696006 ΔE 0.070
- Saddle Brown #8B4513 ΔE 0.070
Use #664E2D 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.