#645F52
Closest named color: Dim Gray (#696969). oklch(48.6% 0.021 89.5), rgb(100, 95, 82).
Aa
White text reads best on this color (6.36:1).
About this color
#645F52 is a medium-dark close to neutral grey. In OKLCH its lightness is 49%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.041 away. White text reads best on it, at 6.36:1.
| Hue family | Neutrals |
| Lightness | medium-dark (49%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.30:1 |
| White text | 6.36:1 |
Values
| HEX | #645F52 |
| RGB | rgb(100, 95, 82) |
| HSL | hsl(43, 10%, 36%) |
| OKLCH | oklch(48.6% 0.021 89.5) |
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 #645F52 | 6.36:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #645F52 | 3.30:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #645F52 text on white | 6.36:1 | AA | Lc 81.7 | Fine for body text |
| #645F52 text on black | 3.30:1 | AA large text | Lc -20.2 | 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
#EAEAE8
oklch(93.6% 0.003 106.5)
-
Step 200
200
#DAD9D5
oklch(88.5% 0.006 95.1)
-
Step 300
300
#C3C0B9
oklch(80.8% 0.01 87.5)
-
Step 400
400
#A4A095
oklch(70.6% 0.016 90.3)
-
Step 500
500
#8E897B
oklch(63% 0.021 90.6)
-
Step 600
600
#787364
oklch(55.6% 0.023 91.7)
-
Step 700
700 (this color)
#645F52
oklch(48.6% 0.021 89.5)
-
Step 800
800
#534F44
oklch(42.8% 0.018 90.4)
-
Step 900
900
#44413A
oklch(37.6% 0.012 87.5)
-
Step 950
950
#282622
oklch(26.9% 0.008 84.6)
#645F52 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) | #625E51 | 0.005 |
| Deuteranopia (no green cones) | #636052 | 0.003 |
| Tritanopia (no blue cones) | #675D5B | 0.018 |
| Achromatopsia (no color) | #5F5F5F | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645F52
#645F52
oklch(48.6% 0.021 89.5)
- #5A5F6C
#5A5F6C
oklch(48.6% 0.022 268.8)
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 #645F52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.041
- Slate #516572 ΔE 0.052
- Dark Taupe #7F684E ΔE 0.055
- Cocoa #875F42 ΔE 0.061
- Dark Moss Green #606C38 ΔE 0.063
- Dirt Brown #836539 ΔE 0.066
- Grey Brown #7F7053 ΔE 0.070
- Mud #735C12 ΔE 0.071
Use #645F52 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.