#664F2D
Closest named color: Mud Brown (#60460F). oklch(44.3% 0.058 76.1), rgb(102, 79, 45).
Aa
White text reads best on this color (7.71:1).
About this color
#664F2D is a dark, muted brown. In OKLCH its lightness is 44%, its chroma 0.058 and its hue 76°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.037 away. White text reads best on it, at 7.71:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | muted (0.058) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.72:1 |
| White text | 7.71:1 |
Values
| HEX | #664F2D |
| RGB | rgb(102, 79, 45) |
| HSL | hsl(36, 39%, 29%) |
| OKLCH | oklch(44.3% 0.058 76.1) |
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 #664F2D | 7.71:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #664F2D | 2.72:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #664F2D text on white | 7.71:1 | AAA | Lc 86.7 | Fine for body text |
| #664F2D text on black | 2.72:1 | Fails | Lc -15.3 | 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
#E0D8CC
oklch(88.5% 0.018 78.2)
-
Step 300
300
#CEBEA9
oklch(80.9% 0.034 74.7)
-
Step 400
400
#B49C7B
oklch(70.6% 0.054 75.5)
-
Step 500
500
#A28459
oklch(63.1% 0.069 75.9)
-
Step 600
600
#8D6D3E
oklch(55.6% 0.076 75.7)
-
Step 700
700
#785B30
oklch(49.1% 0.071 75.7)
-
Step 800
800 (this color)
#664F2D
oklch(44.3% 0.058 76.1)
-
Step 900
900
#4F3E25
oklch(37.6% 0.045 76.3)
-
Step 950
950
#2F2516
oklch(27.2% 0.03 77.1)
#664F2D 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) | #58502A | 0.026 |
| Deuteranopia (no green cones) | #5D552E | 0.022 |
| Tritanopia (no blue cones) | #6E4947 | 0.050 |
| Achromatopsia (no color) | #535353 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664F2D
#664F2D
oklch(44.3% 0.058 76.1)
- #3E5574
#3E5574
oklch(44.4% 0.059 256.1)
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 #664F2D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.037
- Olive Brown #645403 ΔE 0.042
- Milk Chocolate #7F4E1E ΔE 0.046
- Medium Brown #7F5112 ΔE 0.051
- Green Brown #544E03 ΔE 0.052
- Mud #735C12 ΔE 0.056
- Greeny Brown #696006 ΔE 0.067
- Saddle Brown #8B4513 ΔE 0.070
Use #664F2D 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.