#644D32
Closest named color: Mud Brown (#60460F). oklch(43.7% 0.051 70.3), rgb(100, 77, 50).
Aa
White text reads best on this color (7.92:1).
About this color
#644D32 is a dark, muted brown. In OKLCH its lightness is 44%, its chroma 0.051 and its hue 70°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.038 away. White text reads best on it, at 7.92:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | muted (0.051) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.64:1 |
| White text | 7.92:1 |
Values
| HEX | #644D32 |
| RGB | rgb(100, 77, 50) |
| HSL | hsl(32, 33%, 29%) |
| OKLCH | oklch(43.7% 0.051 70.3) |
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 #644D32 | 7.92:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #644D32 | 2.64:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #644D32 text on white | 7.92:1 | AAA | Lc 87.4 | Fine for body text |
| #644D32 text on black | 2.64:1 | Fails | Lc -14.7 | 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
#F7F5F3
oklch(97.1% 0.003 67.8)
-
Step 100
100
#EEE9E4
oklch(93.7% 0.009 67.7)
-
Step 200
200
#E0D7CE
oklch(88.4% 0.016 67.6)
-
Step 300
300
#CDBEAC
oklch(80.9% 0.03 72.4)
-
Step 400
400
#B49C81
oklch(70.7% 0.047 70.2)
-
Step 500
500
#A18361
oklch(63% 0.06 69.9)
-
Step 600
600
#8C6D47
oklch(55.6% 0.066 71.4)
-
Step 700
700
#775B39
oklch(49.2% 0.061 71)
-
Step 800
800 (this color)
#644D32
oklch(43.7% 0.051 70.3)
-
Step 900
900
#4F3E2A
oklch(37.7% 0.04 70.7)
-
Step 950
950
#2E2419
oklch(26.8% 0.024 69.2)
#644D32 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) | #554E30 | 0.027 |
| Deuteranopia (no green cones) | #5A5333 | 0.024 |
| Tritanopia (no blue cones) | #6C4746 | 0.043 |
| Achromatopsia (no color) | #515151 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644D32
#644D32
oklch(43.7% 0.051 70.3)
- #3C546D
#3C546D
oklch(43.7% 0.051 250.1)
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 #644D32, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.038
- Olive Brown #645403 ΔE 0.051
- Milk Chocolate #7F4E1E ΔE 0.053
- Green Brown #544E03 ΔE 0.057
- Medium Brown #7F5112 ΔE 0.059
- Purple Brown #673A3F ΔE 0.065
- Mud #735C12 ΔE 0.067
- Brownish Purple #76424E ΔE 0.070
Use #644D32 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.