#644E2A
Closest named color: Mud Brown (#60460F). oklch(43.8% 0.06 78.5), rgb(100, 78, 42).
Aa
White text reads best on this color (7.87:1).
About this color
#644E2A is a dark, muted brown. In OKLCH its lightness is 44%, its chroma 0.060 and its hue 79°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.032 away. White text reads best on it, at 7.87:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | muted (0.060) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #644E2A |
| RGB | rgb(100, 78, 42) |
| HSL | hsl(37, 41%, 28%) |
| OKLCH | oklch(43.8% 0.06 78.5) |
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 #644E2A | 7.87:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #644E2A | 2.66:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #644E2A text on white | 7.87:1 | AAA | Lc 87.3 | Fine for body text |
| #644E2A text on black | 2.66:1 | Fails | Lc -14.8 | 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
#EEE9E2
oklch(93.6% 0.011 76.6)
-
Step 200
200
#E0D8CB
oklch(88.5% 0.02 80.1)
-
Step 300
300
#CDBEA8
oklch(80.8% 0.035 77.5)
-
Step 400
400
#B49D79
oklch(70.7% 0.056 78.8)
-
Step 500
500
#A18457
oklch(63% 0.071 77.9)
-
Step 600
600
#8C6E3C
oklch(55.7% 0.077 78.9)
-
Step 700
700
#775C2E
oklch(49.2% 0.072 79.1)
-
Step 800
800 (this color)
#644E2A
oklch(43.8% 0.06 78.5)
-
Step 900
900
#4F3F24
oklch(37.8% 0.047 79.7)
-
Step 950
950
#2E2516
oklch(27% 0.029 79.8)
#644E2A 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) | #574E27 | 0.024 |
| Deuteranopia (no green cones) | #5C542B | 0.021 |
| Tritanopia (no blue cones) | #6C4845 | 0.051 |
| Achromatopsia (no color) | #515151 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644E2A
#644E2A
oklch(43.8% 0.06 78.5)
- #3E5373
#3E5373
oklch(43.9% 0.059 258.6)
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 #644E2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.032
- Olive Brown #645403 ΔE 0.040
- Green Brown #544E03 ΔE 0.047
- Milk Chocolate #7F4E1E ΔE 0.050
- Medium Brown #7F5112 ΔE 0.054
- Mud #735C12 ΔE 0.058
- Greeny Brown #696006 ΔE 0.068
- Army Green #4B5D16 ΔE 0.069
Use #644E2A 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.