#644D19
Closest named color: Mud Brown (#60460F). oklch(43.4% 0.075 84.4), rgb(100, 77, 25).
Aa
White text reads best on this color (8.02:1).
About this color
#644D19 is a dark, moderately saturated brown. In OKLCH its lightness is 43%, its chroma 0.075 and its hue 84°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.022 away. White text reads best on it, at 8.02:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.075) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.61:1 |
| White text | 8.02:1 |
Values
| HEX | #644D19 |
| RGB | rgb(100, 77, 25) |
| HSL | hsl(42, 60%, 25%) |
| OKLCH | oklch(43.4% 0.075 84.4) |
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 #644D19 | 8.02:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #644D19 | 2.61:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #644D19 text on white | 8.02:1 | AAA | Lc 87.7 | Fine for body text |
| #644D19 text on black | 2.61:1 | Fails | Lc -14.5 | 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
#F7F5F1
oklch(97.1% 0.006 84.6)
-
Step 100
100
#EEE9E1
oklch(93.6% 0.012 79.8)
-
Step 200
200
#E1D8C8
oklch(88.5% 0.024 82.1)
-
Step 300
300
#CEBFA1
oklch(80.9% 0.044 84.5)
-
Step 400
400
#B59D6E
oklch(70.6% 0.069 83.7)
-
Step 500
500
#A38546
oklch(63.1% 0.09 84.3)
-
Step 600
600
#8E6E26
oklch(55.6% 0.097 84.1)
-
Step 700
700
#795C18
oklch(49.2% 0.09 84.2)
-
Step 800
800 (this color)
#644D19
oklch(43.4% 0.075 84.4)
-
Step 900
900
#503F1A
oklch(37.7% 0.058 84.6)
-
Step 950
950
#2F2510
oklch(27% 0.037 84.4)
#644D19 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) | #574D12 | 0.025 |
| Deuteranopia (no green cones) | #5D531B | 0.020 |
| Tritanopia (no blue cones) | #6D4642 | 0.066 |
| Achromatopsia (no color) | #505050 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644D19
#644D19
oklch(43.4% 0.075 84.4)
- #3C507A
#3C507A
oklch(43.4% 0.074 264.1)
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 #644D19, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.022
- Olive Brown #645403 ΔE 0.028
- Green Brown #544E03 ΔE 0.035
- Milk Chocolate #7F4E1E ΔE 0.052
- Medium Brown #7F5112 ΔE 0.052
- Mud #735C12 ΔE 0.054
- Greeny Brown #696006 ΔE 0.061
- Army Green #4B5D16 ΔE 0.062
Use #644D19 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.