#644D30
Closest named color: Mud Brown (#60460F). oklch(43.7% 0.053 72.1), rgb(100, 77, 48).
Aa
White text reads best on this color (7.93:1).
About this color
#644D30 is a dark, muted brown. In OKLCH its lightness is 44%, its chroma 0.053 and its hue 72°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.036 away. White text reads best on it, at 7.93:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | muted (0.053) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #644D30 |
| RGB | rgb(100, 77, 48) |
| HSL | hsl(33, 35%, 29%) |
| OKLCH | oklch(43.7% 0.053 72.1) |
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 #644D30 | 7.93:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #644D30 | 2.64:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #644D30 text on white | 7.93:1 | AAA | Lc 87.5 | Fine for body text |
| #644D30 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
#F7F5F2
oklch(97.1% 0.005 78.3)
-
Step 100
100
#EEE9E3
oklch(93.6% 0.01 72.7)
-
Step 200
200
#E0D8CD
oklch(88.6% 0.017 76.1)
-
Step 300
300
#CDBEAB
oklch(80.9% 0.031 73.8)
-
Step 400
400
#B49C7F
oklch(70.7% 0.049 72.2)
-
Step 500
500
#A2845E
oklch(63.2% 0.064 72.8)
-
Step 600
600
#8D6D45
oklch(55.7% 0.069 71.8)
-
Step 700
700
#775B36
oklch(49.1% 0.064 73.1)
-
Step 800
800 (this color)
#644D30
oklch(43.7% 0.053 72.1)
-
Step 900
900
#4F3E29
oklch(37.6% 0.041 72)
-
Step 950
950
#2E2418
oklch(26.8% 0.026 71.5)
#644D30 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) | #554E2E | 0.027 |
| Deuteranopia (no green cones) | #5B5331 | 0.023 |
| Tritanopia (no blue cones) | #6C4746 | 0.045 |
| Achromatopsia (no color) | #515151 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644D30
#644D30
oklch(43.7% 0.053 72.1)
- #3C546E
#3C546E
oklch(43.8% 0.052 251)
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 #644D30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.036
- Olive Brown #645403 ΔE 0.049
- Milk Chocolate #7F4E1E ΔE 0.052
- Green Brown #544E03 ΔE 0.054
- Medium Brown #7F5112 ΔE 0.058
- Mud #735C12 ΔE 0.065
- Purple Brown #673A3F ΔE 0.067
- Brownish Purple #76424E ΔE 0.072
Use #644D30 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.