#644728
Closest named color: Mud Brown (#60460F). oklch(42.2% 0.06 66.8), rgb(100, 71, 40).
Aa
White text reads best on this color (8.48:1).
About this color
#644728 is a dark, muted brown. In OKLCH its lightness is 42%, its chroma 0.060 and its hue 67°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.026 away. White text reads best on it, at 8.48:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | muted (0.060) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.47:1 |
| White text | 8.48:1 |
Values
| HEX | #644728 |
| RGB | rgb(100, 71, 40) |
| HSL | hsl(31, 43%, 27%) |
| OKLCH | oklch(42.2% 0.06 66.8) |
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 #644728 | 8.48:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #644728 | 2.47:1 | Fails | Lc 14.9 | Not readable |
| #644728 text on white | 8.48:1 | AAA | Lc 89.1 | Fine for body text |
| #644728 text on black | 2.47:1 | Fails | Lc -13.1 | 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
#F8F5F2
oklch(97.2% 0.005 67.8)
-
Step 100
100
#EFE9E3
oklch(93.7% 0.01 67.7)
-
Step 200
200
#E2D7CC
oklch(88.5% 0.019 67.6)
-
Step 300
300
#D1BDA9
oklch(81% 0.036 67.3)
-
Step 400
400
#B99A7B
oklch(70.6% 0.057 66.7)
-
Step 500
500
#A7815A
oklch(63.1% 0.071 66.7)
-
Step 600
600
#926A3F
oklch(55.6% 0.078 67)
-
Step 700
700
#7D5831
oklch(49.1% 0.073 66.1)
-
Step 800
800 (this color)
#644728
oklch(42.2% 0.06 66.8)
-
Step 900
900
#533D26
oklch(37.8% 0.047 66.8)
-
Step 950
950
#302416
oklch(27% 0.03 70.3)
#644728 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) | #514925 | 0.036 |
| Deuteranopia (no green cones) | #574F29 | 0.032 |
| Tritanopia (no blue cones) | #6C4040 | 0.049 |
| Achromatopsia (no color) | #4D4D4D | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644728
#644728
oklch(42.2% 0.06 66.8)
- #31516D
#31516D
oklch(42.3% 0.06 246.2)
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 #644728, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.026
- Green Brown #544E03 ΔE 0.054
- Olive Brown #645403 ΔE 0.055
- Milk Chocolate #7F4E1E ΔE 0.058
- Purple Brown #673A3F ΔE 0.059
- Medium Brown #7F5112 ΔE 0.064
- Brownish Purple #76424E ΔE 0.073
- Saddle Brown #8B4513 ΔE 0.074
Use #644728 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.