#644C11
Closest named color: Mud Brown (#60460F). oklch(43.1% 0.08 85.1), rgb(100, 76, 17).
Aa
White text reads best on this color (8.12:1).
About this color
#644C11 is a dark, moderately saturated brown. In OKLCH its lightness is 43%, its chroma 0.080 and its hue 85°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.020 away. White text reads best on it, at 8.12:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.080) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.58:1 |
| White text | 8.12:1 |
Values
| HEX | #644C11 |
| RGB | rgb(100, 76, 17) |
| HSL | hsl(43, 71%, 23%) |
| OKLCH | oklch(43.1% 0.08 85.1) |
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 #644C11 | 8.12:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #644C11 | 2.58:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #644C11 text on white | 8.12:1 | AAA | Lc 88.0 | Fine for body text |
| #644C11 text on black | 2.58:1 | Fails | Lc -14.2 | 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
#E1D8C6
oklch(88.5% 0.026 84.6)
-
Step 300
300
#CEBF9F
oklch(80.9% 0.046 85.8)
-
Step 400
400
#B69D6A
oklch(70.6% 0.074 84.5)
-
Step 500
500
#A48540
oklch(63.2% 0.095 85.2)
-
Step 600
600
#8F6E1C
oklch(55.7% 0.104 85.2)
-
Step 700
700
#7A5C0C
oklch(49.3% 0.097 85.2)
-
Step 800
800 (this color)
#644C11
oklch(43.1% 0.08 85.1)
-
Step 900
900
#513F16
oklch(37.8% 0.062 85)
-
Step 950
950
#2F250E
oklch(27% 0.04 86.1)
#644C11 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) | #574C06 | 0.026 |
| Deuteranopia (no green cones) | #5C5214 | 0.021 |
| Tritanopia (no blue cones) | #6D4441 | 0.072 |
| Achromatopsia (no color) | #4F4F4F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644C11
#644C11
oklch(43.1% 0.08 85.1)
- #3A4F7C
#3A4F7C
oklch(43.2% 0.079 264.3)
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 #644C11, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.020
- Olive Brown #645403 ΔE 0.027
- Green Brown #544E03 ΔE 0.032
- Medium Brown #7F5112 ΔE 0.054
- Milk Chocolate #7F4E1E ΔE 0.054
- Mud #735C12 ΔE 0.056
- Greeny Brown #696006 ΔE 0.062
- Army Green #4B5D16 ΔE 0.062
Use #644C11 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.