#64431F
Closest named color: Mud Brown (#60460F). oklch(41.2% 0.068 66.2), rgb(100, 67, 31).
Aa
White text reads best on this color (8.88:1).
About this color
#64431F is a dark, muted brown. In OKLCH its lightness is 41%, its chroma 0.068 and its hue 66°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.021 away. White text reads best on it, at 8.88:1.
| Hue family | Browns |
| Lightness | dark (41%) |
| Chroma | muted (0.068) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.36:1 |
| White text | 8.88:1 |
Values
| HEX | #64431F |
| RGB | rgb(100, 67, 31) |
| HSL | hsl(31, 53%, 26%) |
| OKLCH | oklch(41.2% 0.068 66.2) |
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 #64431F | 8.88:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #64431F | 2.36:1 | Fails | Lc 13.8 | Not readable |
| #64431F text on white | 8.88:1 | AAA | Lc 90.2 | Preferred for body text |
| #64431F text on black | 2.36:1 | Fails | Lc -12.1 | 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
#F8F5F2
oklch(97.2% 0.005 67.8)
-
Step 100
100
#EFE8E2
oklch(93.5% 0.011 63.4)
-
Step 200
200
#E4D7CA
oklch(88.6% 0.023 67.5)
-
Step 300
300
#D3BCA6
oklch(80.9% 0.04 66)
-
Step 400
400
#BC9976
oklch(70.6% 0.064 66.5)
-
Step 500
500
#AB8053
oklch(63.2% 0.081 66.7)
-
Step 600
600
#966837
oklch(55.5% 0.088 66)
-
Step 700
700
#805729
oklch(49.2% 0.082 66.9)
-
Step 800
800 (this color)
#64431F
oklch(41.2% 0.068 66.2)
-
Step 900
900
#553C22
oklch(37.8% 0.053 66.1)
-
Step 950
950
#322314
oklch(27% 0.034 65.5)
#64431F 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) | #4E451B | 0.042 |
| Deuteranopia (no green cones) | #564D20 | 0.037 |
| Tritanopia (no blue cones) | #6D3B3B | 0.054 |
| Achromatopsia (no color) | #4A4A4A | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64431F
#64431F
oklch(41.2% 0.068 66.2)
- #294E6E
#294E6E
oklch(41.2% 0.069 246.5)
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 #64431F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.021
- Green Brown #544E03 ΔE 0.054
- Olive Brown #645403 ΔE 0.059
- Purple Brown #673A3F ΔE 0.060
- Milk Chocolate #7F4E1E ΔE 0.063
- Chestnut #742802 ΔE 0.066
- Medium Brown #7F5112 ΔE 0.069
- Saddle Brown #8B4513 ΔE 0.077
Use #64431F 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.