#644403
Closest named color: Mud Brown (#60460F). oklch(41.2% 0.084 77.6), rgb(100, 68, 3).
Aa
White text reads best on this color (8.86:1).
About this color
#644403 is a dark, moderately saturated brown. In OKLCH its lightness is 41%, its chroma 0.084 and its hue 78°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.009 away. White text reads best on it, at 8.86:1.
| Hue family | Browns |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.084) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.37:1 |
| White text | 8.86:1 |
Values
| HEX | #644403 |
| RGB | rgb(100, 68, 3) |
| HSL | hsl(40, 94%, 20%) |
| OKLCH | oklch(41.2% 0.084 77.6) |
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 #644403 | 8.86:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #644403 | 2.37:1 | Fails | Lc 13.9 | Not readable |
| #644403 text on white | 8.86:1 | AAA | Lc 90.1 | Preferred for body text |
| #644403 text on black | 2.37:1 | Fails | Lc -12.2 | 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
#F8F5F1
oklch(97.1% 0.006 75.4)
-
Step 100
100
#EFE9E0
oklch(93.6% 0.014 78.3)
-
Step 200
200
#E3D7C6
oklch(88.4% 0.026 76.8)
-
Step 300
300
#D3BD9D
oklch(80.9% 0.05 77.2)
-
Step 400
400
#BC9B67
oklch(70.8% 0.079 78.3)
-
Step 500
500
#AB813C
oklch(63.1% 0.101 77.5)
-
Step 600
600
#966A13
oklch(55.6% 0.11 78.2)
-
Step 700
700
#805801
oklch(49.1% 0.102 77.9)
-
Step 800
800 (this color)
#644403
oklch(41.2% 0.084 77.6)
-
Step 900
900
#553D13
oklch(37.8% 0.066 78)
-
Step 950
950
#32240D
oklch(27.1% 0.042 77.8)
#644403 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) | #504500 | 0.038 |
| Deuteranopia (no green cones) | #574D06 | 0.034 |
| Tritanopia (no blue cones) | #6E3B39 | 0.073 |
| Achromatopsia (no color) | #4A4A4A | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644403
#644403
oklch(41.2% 0.084 77.6)
- #2C4B78
#2C4B78
oklch(41.2% 0.084 257.7)
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 #644403, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.009
- Green Brown #544E03 ΔE 0.040
- Olive Brown #645403 ΔE 0.046
- Milk Chocolate #7F4E1E ΔE 0.064
- Medium Brown #7F5112 ΔE 0.066
- Chestnut #742802 ΔE 0.073
- Mud #735C12 ΔE 0.075
- Saddle Brown #8B4513 ΔE 0.079
Use #644403 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.