#664306
Closest named color: Mud Brown (#60460F). oklch(41.3% 0.084 73.9), rgb(102, 67, 6).
Aa
White text reads best on this color (8.85:1).
About this color
#664306 is a dark, moderately saturated brown. In OKLCH its lightness is 41%, its chroma 0.084 and its hue 74°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.013 away. White text reads best on it, at 8.85:1.
| Hue family | Browns |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.084) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.37:1 |
| White text | 8.85:1 |
Values
| HEX | #664306 |
| RGB | rgb(102, 67, 6) |
| HSL | hsl(38, 89%, 21%) |
| OKLCH | oklch(41.3% 0.084 73.9) |
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 #664306 | 8.85:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #664306 | 2.37:1 | Fails | Lc 13.9 | Not readable |
| #664306 text on white | 8.85:1 | AAA | Lc 90.0 | Preferred for body text |
| #664306 text on black | 2.37:1 | Fails | Lc -12.2 | 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
#F8F5F1
oklch(97.1% 0.006 75.4)
-
Step 100
100
#F0E9E0
oklch(93.7% 0.014 74.4)
-
Step 200
200
#E4D7C6
oklch(88.5% 0.027 74.7)
-
Step 300
300
#D4BC9E
oklch(80.8% 0.049 73.2)
-
Step 400
400
#BE9968
oklch(70.6% 0.079 73.8)
-
Step 500
500
#AE803E
oklch(63.2% 0.101 74)
-
Step 600
600
#996817
oklch(55.6% 0.11 73.9)
-
Step 700
700
#835606
oklch(49.1% 0.102 73.3)
-
Step 800
800 (this color)
#664306
oklch(41.3% 0.084 73.9)
-
Step 900
900
#563C14
oklch(37.7% 0.066 74.8)
-
Step 950
950
#33230D
oklch(27% 0.042 73)
#664306 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) | #4F4500 | 0.044 |
| Deuteranopia (no green cones) | #584D09 | 0.037 |
| Tritanopia (no blue cones) | #703A38 | 0.069 |
| Achromatopsia (no color) | #4A4A4A | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664306
#664306
oklch(41.3% 0.084 73.9)
- #284C78
#284C78
oklch(41.2% 0.085 254.5)
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 #664306, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.013
- Green Brown #544E03 ΔE 0.045
- Olive Brown #645403 ΔE 0.049
- Milk Chocolate #7F4E1E ΔE 0.061
- Medium Brown #7F5112 ΔE 0.065
- Chestnut #742802 ΔE 0.069
- Saddle Brown #8B4513 ΔE 0.075
- Mud #735C12 ΔE 0.076
Use #664306 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.