#64573F
Closest named color: Olive Brown (#645403). oklch(46.3% 0.04 82.6), rgb(100, 87, 63).
Aa
White text reads best on this color (7.05:1).
About this color
#64573F is a medium-dark, muted brown. In OKLCH its lightness is 46%, its chroma 0.040 and its hue 83°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.055 away. White text reads best on it, at 7.05:1.
| Hue family | Browns |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.040) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #64573F |
| RGB | rgb(100, 87, 63) |
| HSL | hsl(39, 23%, 32%) |
| OKLCH | oklch(46.3% 0.04 82.6) |
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 #64573F | 7.05:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #64573F | 2.97:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #64573F text on white | 7.05:1 | AAA | Lc 84.4 | Fine for body text |
| #64573F 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
#ECE9E6
oklch(93.6% 0.005 67.8)
-
Step 200
200
#DDD9D1
oklch(88.6% 0.012 84.6)
-
Step 300
300
#C7C0B3
oklch(81% 0.02 83.1)
-
Step 400
400
#AA9F8B
oklch(70.6% 0.031 82.6)
-
Step 500
500
#95886E
oklch(63.1% 0.04 84.5)
-
Step 600
600
#807156
oklch(55.5% 0.044 82.1)
-
Step 700
700 (this color)
#64573F
oklch(46.3% 0.04 82.6)
-
Step 800
800
#584E3A
oklch(42.8% 0.034 84.4)
-
Step 900
900
#484032
oklch(37.5% 0.025 81.6)
-
Step 950
950
#2A261D
oklch(27% 0.017 86.9)
#64573F 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) | #5D573D | 0.013 |
| Deuteranopia (no green cones) | #605A40 | 0.010 |
| Tritanopia (no blue cones) | #6A5351 | 0.036 |
| Achromatopsia (no color) | #595959 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64573F
#64573F
oklch(46.3% 0.04 82.6)
- #4D5970
#4D5970
oklch(46.3% 0.041 263.3)
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 #64573F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.055
- Milk Chocolate #7F4E1E ΔE 0.056
- Mud #735C12 ΔE 0.057
- Medium Brown #7F5112 ΔE 0.059
- Mud Brown #60460F ΔE 0.063
- Greeny Brown #696006 ΔE 0.066
- Dark Moss Green #606C38 ΔE 0.068
- Cocoa #875F42 ΔE 0.068
Use #64573F 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.