#664321
Closest named color: Mud Brown (#60460F). oklch(41.5% 0.069 63.1), rgb(102, 67, 33).
Aa
White text reads best on this color (8.78:1).
About this color
#664321 is a dark, muted brown. In OKLCH its lightness is 42%, its chroma 0.069 and its hue 63°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.025 away. White text reads best on it, at 8.78:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | muted (0.069) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.38:1 |
| White text | 8.78:1 |
Values
| HEX | #664321 |
| RGB | rgb(102, 67, 33) |
| HSL | hsl(30, 51%, 26%) |
| OKLCH | oklch(41.5% 0.069 63.1) |
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 #664321 | 8.78:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #664321 | 2.38:1 | Fails | Lc 14.1 | Not readable |
| #664321 text on white | 8.78:1 | AAA | Lc 89.9 | Fine for body text |
| #664321 text on black | 2.38:1 | Fails | Lc -12.3 | 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
#F0E8E2
oklch(93.6% 0.012 59.6)
-
Step 200
200
#E4D6CA
oklch(88.4% 0.022 63.2)
-
Step 300
300
#D4BCA7
oklch(81% 0.04 63.4)
-
Step 400
400
#BE9877
oklch(70.7% 0.064 62.5)
-
Step 500
500
#AD7F54
oklch(63.2% 0.082 63.5)
-
Step 600
600
#986738
oklch(55.6% 0.089 63)
-
Step 700
700
#82562A
oklch(49.2% 0.083 63.7)
-
Step 800
800 (this color)
#664321
oklch(41.5% 0.069 63.1)
-
Step 900
900
#563B22
oklch(37.7% 0.054 62.8)
-
Step 950
950
#322315
oklch(27% 0.033 63.7)
#664321 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) | #4E461E | 0.046 |
| Deuteranopia (no green cones) | #564E21 | 0.042 |
| Tritanopia (no blue cones) | #6F3B3B | 0.052 |
| Achromatopsia (no color) | #4B4B4B | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664321
#664321
oklch(41.5% 0.069 63.1)
- #27506E
#27506E
oklch(41.6% 0.068 242.6)
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 #664321, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.025
- Purple Brown #673A3F ΔE 0.057
- Green Brown #544E03 ΔE 0.057
- Milk Chocolate #7F4E1E ΔE 0.060
- Olive Brown #645403 ΔE 0.060
- Chestnut #742802 ΔE 0.065
- Medium Brown #7F5112 ΔE 0.067
- Saddle Brown #8B4513 ΔE 0.073
Use #664321 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.