#644005
Closest named color: Mud Brown (#60460F). oklch(40.4% 0.084 72.1), rgb(100, 64, 5).
Aa
White text reads best on this color (9.22:1).
About this color
#644005 is a dark, moderately saturated brown. In OKLCH its lightness is 40%, its chroma 0.084 and its hue 72°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.017 away. White text reads best on it, at 9.22:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.084) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.27:1 |
| White text | 9.22:1 |
Values
| HEX | #644005 |
| RGB | rgb(100, 64, 5) |
| HSL | hsl(37, 90%, 21%) |
| OKLCH | oklch(40.4% 0.084 72.1) |
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 #644005 | 9.22:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #644005 | 2.27:1 | Fails | Lc 13.0 | Not readable |
| #644005 text on white | 9.22:1 | AAA | Lc 91.0 | Preferred for body text |
| #644005 text on black | 2.27:1 | Fails | Lc -11.3 | 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
#F8F5F1
oklch(97.1% 0.006 75.4)
-
Step 100
100
#F0E9E0
oklch(93.7% 0.014 74.4)
-
Step 200
200
#E5D7C6
oklch(88.6% 0.028 72.8)
-
Step 300
300
#D5BC9F
oklch(80.9% 0.049 71.2)
-
Step 400
400
#BF996A
oklch(70.7% 0.078 72)
-
Step 500
500
#AF7F3F
oklch(63.1% 0.1 72)
-
Step 600
600
#9A671B
oklch(55.5% 0.109 71.6)
-
Step 700
700
#83560B
oklch(49.1% 0.101 72.6)
-
Step 800
800 (this color)
#644005
oklch(40.4% 0.084 72.1)
-
Step 900
900
#573B15
oklch(37.6% 0.066 71.5)
-
Step 950
950
#33230E
oklch(27% 0.041 72)
#644005 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) | #4C4200 | 0.047 |
| Deuteranopia (no green cones) | #554B07 | 0.041 |
| Tritanopia (no blue cones) | #6E3736 | 0.069 |
| Achromatopsia (no color) | #474747 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644005
#644005
oklch(40.4% 0.084 72.1)
- #244A74
#244A74
oklch(40.3% 0.083 252.6)
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 #644005, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.017
- Green Brown #544E03 ΔE 0.049
- Olive Brown #645403 ΔE 0.058
- Chestnut #742802 ΔE 0.063
- Milk Chocolate #7F4E1E ΔE 0.070
- Medium Brown #7F5112 ΔE 0.074
- Purple Brown #673A3F ΔE 0.075
- Saddle Brown #8B4513 ΔE 0.081
Use #644005 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.