#644336
Closest named color: Purple Brown (#673A3F). oklch(41.7% 0.051 42.3), rgb(100, 67, 54).
Aa
White text reads best on this color (8.75:1).
About this color
#644336 is a dark, muted brown. In OKLCH its lightness is 42%, its chroma 0.051 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.034 away. White text reads best on it, at 8.75:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | muted (0.051) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.39:1 |
| White text | 8.75:1 |
Values
| HEX | #644336 |
| RGB | rgb(100, 67, 54) |
| HSL | hsl(17, 30%, 30%) |
| OKLCH | oklch(41.7% 0.051 42.3) |
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 #644336 | 8.75:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #644336 | 2.39:1 | Fails | Lc 14.1 | Not readable |
| #644336 text on white | 8.75:1 | AAA | Lc 89.9 | Fine for body text |
| #644336 text on black | 2.39:1 | 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
#F8F5F3
oklch(97.2% 0.004 56.4)
-
Step 100
100
#EFE8E5
oklch(93.6% 0.009 44.9)
-
Step 200
200
#E3D6D1
oklch(88.5% 0.016 42.4)
-
Step 300
300
#D2BBB2
oklch(80.9% 0.029 42.6)
-
Step 400
400
#BB978A
oklch(70.6% 0.047 40.8)
-
Step 500
500
#AA7E6D
oklch(63.2% 0.061 42.1)
-
Step 600
600
#956754
oklch(55.7% 0.066 43.3)
-
Step 700
700
#7F5545
oklch(49.1% 0.062 41.7)
-
Step 800
800 (this color)
#644336
oklch(41.7% 0.051 42.3)
-
Step 900
900
#543B31
oklch(37.8% 0.039 42.7)
-
Step 950
950
#31231D
oklch(27.1% 0.024 44.3)
#644336 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) | #4B4735 | 0.046 |
| Deuteranopia (no green cones) | #534D36 | 0.041 |
| Tritanopia (no blue cones) | #6C3E40 | 0.029 |
| Achromatopsia (no color) | #4B4B4B | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644336
#644336
oklch(41.7% 0.051 42.3)
- #2A5260
#2A5260
oklch(41.5% 0.051 223)
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 #644336, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.034
- Mud Brown #60460F ΔE 0.050
- Brownish Purple #76424E ΔE 0.053
- Milk Chocolate #7F4E1E ΔE 0.071
- Chestnut #742802 ΔE 0.072
- Charcoal Grey #3C4142 ΔE 0.073
- Green Brown #544E03 ΔE 0.077
- Olive Brown #645403 ΔE 0.080
Use #644336 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.