#645340
Closest named color: Milk Chocolate (#7F4E1E). oklch(45.4% 0.037 69.8), rgb(100, 83, 64).
Aa
White text reads best on this color (7.36:1).
About this color
#645340 is a medium-dark, muted brown. In OKLCH its lightness is 45%, its chroma 0.037 and its hue 70°. Its hue sits on the warm side of the wheel. The nearest named color is Milk Chocolate (#7F4E1E), ΔE 0.057 away. White text reads best on it, at 7.36:1.
| Hue family | Browns |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.037) |
| Temperature | warm |
| Nearest name | Milk Chocolate (#7F4E1E) |
| Black text | 2.85:1 |
| White text | 7.36:1 |
Values
| HEX | #645340 |
| RGB | rgb(100, 83, 64) |
| HSL | hsl(32, 22%, 32%) |
| OKLCH | oklch(45.4% 0.037 69.8) |
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 #645340 | 7.36:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #645340 | 2.85:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #645340 text on white | 7.36:1 | AAA | Lc 85.6 | Fine for body text |
| #645340 text on black | 2.85:1 | Fails | Lc -16.5 | 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 800.
-
Step 50
50
#F7F5F3
oklch(97.1% 0.003 67.8)
-
Step 100
100
#EDE9E5
oklch(93.6% 0.007 67.7)
-
Step 200
200
#DED8D1
oklch(88.5% 0.012 71.9)
-
Step 300
300
#CABEB2
oklch(80.8% 0.021 67.5)
-
Step 400
400
#AF9D8A
oklch(70.6% 0.034 68.7)
-
Step 500
500
#9B856D
oklch(63% 0.044 69.3)
-
Step 600
600
#866F55
oklch(55.7% 0.048 70)
-
Step 700
700
#715C45
oklch(49% 0.044 69.1)
-
Step 800
800 (this color)
#645340
oklch(45.4% 0.037 69.8)
-
Step 900
900
#4C3F31
oklch(37.7% 0.029 68.8)
-
Step 950
950
#2C251D
oklch(27% 0.018 70.7)
#645340 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) | #59543F | 0.019 |
| Deuteranopia (no green cones) | #5D5740 | 0.016 |
| Tritanopia (no blue cones) | #6A4F4E | 0.030 |
| Achromatopsia (no color) | #565656 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645340
#645340
oklch(45.4% 0.037 69.8)
- #47586B
#47586B
oklch(45.4% 0.038 251.5)
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 #645340, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Milk Chocolate #7F4E1E ΔE 0.057
- Mud Brown #60460F ΔE 0.059
- Olive Brown #645403 ΔE 0.060
- Medium Brown #7F5112 ΔE 0.063
- Mud #735C12 ΔE 0.066
- Brownish Purple #76424E ΔE 0.067
- Green Brown #544E03 ΔE 0.071
- Purple Brown #673A3F ΔE 0.072
Use #645340 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.