#664239
Closest named color: Purple Brown (#673A3F). oklch(41.8% 0.053 34.7), rgb(102, 66, 57).
Aa
White text reads best on this color (8.73:1).
About this color
#664239 is a dark, muted red. In OKLCH its lightness is 42%, its chroma 0.053 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.028 away. White text reads best on it, at 8.73:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | muted (0.053) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #664239 |
| RGB | rgb(102, 66, 57) |
| HSL | hsl(12, 28%, 31%) |
| OKLCH | oklch(41.8% 0.053 34.7) |
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 #664239 | 8.73:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #664239 | 2.40:1 | Fails | Lc 14.2 | Not readable |
| #664239 text on white | 8.73:1 | AAA | Lc 89.8 | Fine for body text |
| #664239 text on black | 2.40:1 | Fails | Lc -12.4 | 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
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#F0E8E6
oklch(93.7% 0.009 34.3)
-
Step 200
200
#E4D5D2
oklch(88.4% 0.017 31.1)
-
Step 300
300
#D4BAB4
oklch(80.9% 0.031 33.1)
-
Step 400
400
#BD968C
oklch(70.6% 0.049 34.8)
-
Step 500
500
#AC7C70
oklch(63.1% 0.063 34.5)
-
Step 600
600
#976558
oklch(55.6% 0.068 35.2)
-
Step 700
700
#815348
oklch(49.1% 0.065 34.1)
-
Step 800
800 (this color)
#664239
oklch(41.8% 0.053 34.7)
-
Step 900
900
#553A33
oklch(37.7% 0.041 35.1)
-
Step 950
950
#32221E
oklch(27% 0.026 34.5)
#664239 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) | #4A4638 | 0.051 |
| Deuteranopia (no green cones) | #534E39 | 0.047 |
| Tritanopia (no blue cones) | #6E3D40 | 0.025 |
| Achromatopsia (no color) | #4B4B4B | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664239
#664239
oklch(41.8% 0.053 34.7)
- #26545E
#26545E
oklch(41.8% 0.053 213.8)
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 #664239, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.028
- Brownish Purple #76424E ΔE 0.046
- Mud Brown #60460F ΔE 0.056
- Chestnut #742802 ΔE 0.071
- Milk Chocolate #7F4E1E ΔE 0.073
- Charcoal Grey #3C4142 ΔE 0.076
- Red Brown #8B2E16 ΔE 0.081
- Saddle Brown #8B4513 ΔE 0.082
Use #664239 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.