#664136
Closest named color: Purple Brown (#673A3F). oklch(41.5% 0.055 37.3), rgb(102, 65, 54).
Aa
White text reads best on this color (8.84:1).
About this color
#664136 is a dark, muted red. In OKLCH its lightness is 42%, its chroma 0.055 and its hue 37°. 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 8.84:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | muted (0.055) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.37:1 |
| White text | 8.84:1 |
Values
| HEX | #664136 |
| RGB | rgb(102, 65, 54) |
| HSL | hsl(14, 31%, 31%) |
| OKLCH | oklch(41.5% 0.055 37.3) |
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 #664136 | 8.84:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #664136 | 2.37:1 | Fails | Lc 13.9 | Not readable |
| #664136 text on white | 8.84:1 | AAA | Lc 90.1 | Preferred for body text |
| #664136 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
#F8F4F3
oklch(97% 0.005 34.3)
-
Step 100
100
#F0E8E5
oklch(93.6% 0.01 41.9)
-
Step 200
200
#E4D5D1
oklch(88.4% 0.018 35.3)
-
Step 300
300
#D4BAB2
oklch(80.9% 0.032 37.8)
-
Step 400
400
#BE968A
oklch(70.7% 0.051 37.3)
-
Step 500
500
#AD7C6D
oklch(63.1% 0.066 37.7)
-
Step 600
600
#986455
oklch(55.5% 0.072 36.8)
-
Step 700
700
#825345
oklch(49.1% 0.067 37.3)
-
Step 800
800 (this color)
#664136
oklch(41.5% 0.055 37.3)
-
Step 900
900
#563A31
oklch(37.8% 0.043 38.6)
-
Step 950
950
#32221D
oklch(27% 0.026 38.1)
#664136 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) | #4A4635 | 0.052 |
| Deuteranopia (no green cones) | #534D36 | 0.048 |
| Tritanopia (no blue cones) | #6E3B3E | 0.028 |
| Achromatopsia (no color) | #4A4A4A | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664136
#664136
oklch(41.5% 0.055 37.3)
- #24535F
#24535F
oklch(41.5% 0.055 216.9)
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 #664136, 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 0.050
- Mud Brown #60460F ΔE 0.054
- Chestnut #742802 ΔE 0.067
- Milk Chocolate #7F4E1E ΔE 0.073
- Charcoal Grey #3C4142 ΔE 0.076
- Red Brown #8B2E16 ΔE 0.079
- Rust Brown #8B3103 ΔE 0.081
Use #664136 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.