#644E10
Closest named color: Olive Brown (#645403). oklch(43.5% 0.081 87.8), rgb(100, 78, 16).
Aa
White text reads best on this color (7.95:1).
About this color
#644E10 is a dark, moderately saturated brown. In OKLCH its lightness is 44%, its chroma 0.081 and its hue 88°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.021 away. White text reads best on it, at 7.95:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.081) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.63:1 |
| White text | 7.95:1 |
Values
| HEX | #644E10 |
| RGB | rgb(100, 78, 16) |
| HSL | hsl(44, 72%, 23%) |
| OKLCH | oklch(43.5% 0.081 87.8) |
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 #644E10 | 7.95:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #644E10 | 2.63:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #644E10 text on white | 7.95:1 | AAA | Lc 87.5 | Fine for body text |
| #644E10 text on black | 2.63:1 | 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
#F7F5F1
oklch(97.1% 0.006 84.6)
-
Step 100
100
#EEE9E0
oklch(93.5% 0.013 82.4)
-
Step 200
200
#E0D8C6
oklch(88.4% 0.026 86.9)
-
Step 300
300
#CDBF9E
oklch(80.8% 0.047 87.8)
-
Step 400
400
#B59E69
oklch(70.7% 0.076 87)
-
Step 500
500
#A2863E
oklch(63.1% 0.097 88.1)
-
Step 600
600
#8D6F17
oklch(55.6% 0.106 88.2)
-
Step 700
700
#785C06
oklch(49% 0.098 87.4)
-
Step 800
800 (this color)
#644E10
oklch(43.5% 0.081 87.8)
-
Step 900
900
#503F14
oklch(37.7% 0.064 87)
-
Step 950
950
#2F250D
oklch(27% 0.041 86.8)
#644E10 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) | #584D04 | 0.024 |
| Deuteranopia (no green cones) | #5E5314 | 0.017 |
| Tritanopia (no blue cones) | #6D4642 | 0.074 |
| Achromatopsia (no color) | #515151 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644E10
#644E10
oklch(43.5% 0.081 87.8)
- #3E4F7E
#3E4F7E
oklch(43.6% 0.081 267.9)
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 #644E10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.021
- Mud Brown #60460F ΔE 0.025
- Green Brown #544E03 ΔE 0.031
- Mud #735C12 ΔE 0.051
- Medium Brown #7F5112 ΔE 0.052
- Milk Chocolate #7F4E1E ΔE 0.054
- Greeny Brown #696006 ΔE 0.056
- Army Green #4B5D16 ΔE 0.057
Use #644E10 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.