#645E48
Closest named color: Dim Gray (#696969). oklch(48.1% 0.034 94.6), rgb(100, 94, 72).
Aa
White text reads best on this color (6.48:1).
About this color
#645E48 is a medium-dark, muted brown. In OKLCH its lightness is 48%, its chroma 0.034 and its hue 95°. Its hue sits on the warm side of the wheel. The nearest named color is Dim Gray (#696969), ΔE 0.052 away. White text reads best on it, at 6.48:1.
| Hue family | Browns |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.034) |
| Temperature | warm |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.23:1 |
| White text | 6.48:1 |
Values
| HEX | #645E48 |
| RGB | rgb(100, 94, 72) |
| HSL | hsl(47, 16%, 34%) |
| OKLCH | oklch(48.1% 0.034 94.6) |
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 #645E48 | 6.48:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #645E48 | 3.23:1 | AA large text | Lc 21.9 | Dividers and decoration only |
| #645E48 text on white | 6.48:1 | AA | Lc 82.2 | Fine for body text |
| #645E48 text on black | 3.23:1 | AA large text | Lc -19.7 | 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
#F6F5F4
oklch(97.1% 0.002 67.8)
-
Step 100
100
#EBEAE6
oklch(93.7% 0.005 95.1)
-
Step 200
200
#DBD9D2
oklch(88.5% 0.01 93.6)
-
Step 300
300
#C4C1B5
oklch(81% 0.017 95.3)
-
Step 400
400
#A6A18E
oklch(70.8% 0.027 94.8)
-
Step 500
500
#908A73
oklch(63.2% 0.034 95.1)
-
Step 600
600
#7A735B
oklch(55.5% 0.036 93.7)
-
Step 700
700 (this color)
#645E48
oklch(48.1% 0.034 94.6)
-
Step 800
800
#544F3D
oklch(42.7% 0.029 94.4)
-
Step 900
900
#454234
oklch(37.8% 0.023 97.3)
-
Step 950
950
#29261F
oklch(26.9% 0.013 87.6)
#645E48 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) | #635D47 | 0.004 |
| Deuteranopia (no green cones) | #645F49 | 0.003 |
| Tritanopia (no blue cones) | #685B58 | 0.030 |
| Achromatopsia (no color) | #5E5E5E | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645E48
#645E48
oklch(48.1% 0.034 94.6)
- #585D72
#585D72
oklch(48.2% 0.034 274.5)
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 #645E48, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.052
- Dark Moss Green #606C38 ΔE 0.055
- Dark Taupe #7F684E ΔE 0.056
- Mud #735C12 ΔE 0.058
- Cocoa #875F42 ΔE 0.060
- Dirt Brown #836539 ΔE 0.061
- Slate #516572 ΔE 0.064
- Dark Olive Green #556B2F ΔE 0.065
Use #645E48 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.