#664615
Closest named color: Mud Brown (#60460F). oklch(42% 0.077 73.8), rgb(102, 70, 21).
Aa
White text reads best on this color (8.56:1).
About this color
#664615 is a dark, moderately saturated brown. In OKLCH its lightness is 42%, its chroma 0.077 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 8.56:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.077) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.45:1 |
| White text | 8.56:1 |
Values
| HEX | #664615 |
| RGB | rgb(102, 70, 21) |
| HSL | hsl(36, 66%, 24%) |
| OKLCH | oklch(42% 0.077 73.8) |
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 #664615 | 8.56:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #664615 | 2.45:1 | Fails | Lc 14.7 | Not readable |
| #664615 text on white | 8.56:1 | AAA | Lc 89.3 | Fine for body text |
| #664615 text on black | 2.45:1 | Fails | Lc -13.0 | 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
#EFE9E1
oklch(93.7% 0.013 75.4)
-
Step 200
200
#E3D7C8
oklch(88.5% 0.024 73.6)
-
Step 300
300
#D3BDA1
oklch(81% 0.046 73.8)
-
Step 400
400
#BC9A6E
oklch(70.7% 0.072 73.4)
-
Step 500
500
#AB8146
oklch(63.2% 0.092 74.1)
-
Step 600
600
#966926
oklch(55.5% 0.1 73.4)
-
Step 700
700
#805818
oklch(49.2% 0.093 74.2)
-
Step 800
800 (this color)
#664615
oklch(42% 0.077 73.8)
-
Step 900
900
#553C1A
oklch(37.7% 0.06 72.5)
-
Step 950
950
#322410
oklch(27.2% 0.039 74.8)
#664615 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) | #51480E | 0.041 |
| Deuteranopia (no green cones) | #594F17 | 0.034 |
| Tritanopia (no blue cones) | #703E3C | 0.064 |
| Achromatopsia (no color) | #4C4C4C | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664615
#664615
oklch(42% 0.077 73.8)
- #2E4F76
#2E4F76
oklch(42.1% 0.076 253.6)
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 #664615, 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 0.044
- Olive Brown #645403 ΔE 0.045
- Milk Chocolate #7F4E1E ΔE 0.055
- Medium Brown #7F5112 ΔE 0.059
- Mud #735C12 ΔE 0.070
- Saddle Brown #8B4513 ΔE 0.072
- Chestnut #742802 ΔE 0.074
Use #664615 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.