#64573D
Closest named color: Olive Brown (#645403). oklch(46.2% 0.043 84.3), rgb(100, 87, 61).
Aa
White text reads best on this color (7.06:1).
About this color
#64573D is a medium-dark, muted brown. In OKLCH its lightness is 46%, its chroma 0.043 and its hue 84°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.052 away. White text reads best on it, at 7.06:1.
| Hue family | Browns |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.043) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #64573D |
| RGB | rgb(100, 87, 61) |
| HSL | hsl(40, 24%, 32%) |
| OKLCH | oklch(46.2% 0.043 84.3) |
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 #64573D | 7.06:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #64573D | 2.97:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #64573D text on white | 7.06:1 | AAA | Lc 84.5 | Fine for body text |
| #64573D text on black | 2.97:1 | Fails | Lc -17.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#ECE9E5
oklch(93.5% 0.006 75.4)
-
Step 200
200
#DDD9D1
oklch(88.6% 0.012 84.6)
-
Step 300
300
#C7C0B2
oklch(81% 0.021 84.6)
-
Step 400
400
#AA9F8A
oklch(70.6% 0.032 83.6)
-
Step 500
500
#96886D
oklch(63.2% 0.042 83.7)
-
Step 600
600
#807154
oklch(55.5% 0.046 83.6)
-
Step 700
700 (this color)
#64573D
oklch(46.2% 0.043 84.3)
-
Step 800
800
#584E39
oklch(42.8% 0.035 85.4)
-
Step 900
900
#484131
oklch(37.8% 0.028 87.1)
-
Step 950
950
#2A261D
oklch(27% 0.017 86.9)
#64573D 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) | #5D563B | 0.013 |
| Deuteranopia (no green cones) | #605A3E | 0.010 |
| Tritanopia (no blue cones) | #6A5350 | 0.037 |
| Achromatopsia (no color) | #585858 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64573D
#64573D
oklch(46.2% 0.043 84.3)
- #4D5971
#4D5971
oklch(46.3% 0.042 264)
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 #64573D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.052
- Mud #735C12 ΔE 0.054
- Milk Chocolate #7F4E1E ΔE 0.054
- Medium Brown #7F5112 ΔE 0.057
- Mud Brown #60460F ΔE 0.061
- Greeny Brown #696006 ΔE 0.064
- Dark Moss Green #606C38 ΔE 0.067
- Camo Green #526525 ΔE 0.067
Use #64573D 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.