#645D50
Closest named color: Dim Gray (#696969). oklch(48.1% 0.022 83), rgb(100, 93, 80).
Aa
White text reads best on this color (6.51:1).
About this color
#645D50 is a medium-dark close to neutral grey. In OKLCH its lightness is 48%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.046 away. White text reads best on it, at 6.51:1.
| Hue family | Neutrals |
| Lightness | medium-dark (48%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.22:1 |
| White text | 6.51:1 |
Values
| HEX | #645D50 |
| RGB | rgb(100, 93, 80) |
| HSL | hsl(39, 11%, 35%) |
| OKLCH | oklch(48.1% 0.022 83) |
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 #645D50 | 6.51:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #645D50 | 3.22:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #645D50 text on white | 6.51:1 | AA | Lc 82.3 | Fine for body text |
| #645D50 text on black | 3.22:1 | AA large text | Lc -19.6 | 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
#EBEAE7
oklch(93.7% 0.004 91.4)
-
Step 200
200
#DBD9D5
oklch(88.6% 0.006 84.6)
-
Step 300
300
#C4C0B9
oklch(80.9% 0.011 81.8)
-
Step 400
400
#A6A095
oklch(70.8% 0.017 82.8)
-
Step 500
500
#90897B
oklch(63.2% 0.022 84.6)
-
Step 600
600
#7A7264
oklch(55.5% 0.023 81.7)
-
Step 700
700 (this color)
#645D50
oklch(48.1% 0.022 83)
-
Step 800
800
#544E44
oklch(42.7% 0.018 80.6)
-
Step 900
900
#454139
oklch(37.7% 0.014 84.6)
-
Step 950
950
#292622
oklch(27% 0.009 75.2)
#645D50 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) | #605D4F | 0.007 |
| Deuteranopia (no green cones) | #625E50 | 0.004 |
| Tritanopia (no blue cones) | #685B59 | 0.019 |
| Achromatopsia (no color) | #5E5E5E | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645D50
#645D50
oklch(48.1% 0.022 83)
- #575E6B
#575E6B
oklch(48.1% 0.023 262.9)
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 #645D50, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.046
- Slate #516572 ΔE 0.054
- Dark Taupe #7F684E ΔE 0.059
- Cocoa #875F42 ΔE 0.063
- Dark Moss Green #606C38 ΔE 0.066
- Dirt Brown #836539 ΔE 0.068
- Mud #735C12 ΔE 0.070
- Milk Chocolate #7F4E1E ΔE 0.071
Use #645D50 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.