#645E52
Closest named color: Dim Gray (#696969). oklch(48.4% 0.02 84.6), rgb(100, 94, 82).
Aa
White text reads best on this color (6.43:1).
About this color
#645E52 is a medium-dark close to neutral grey. In OKLCH its lightness is 48%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.042 away. White text reads best on it, at 6.43:1.
| Hue family | Neutrals |
| Lightness | medium-dark (48%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.26:1 |
| White text | 6.43:1 |
Values
| HEX | #645E52 |
| RGB | rgb(100, 94, 82) |
| HSL | hsl(40, 10%, 36%) |
| OKLCH | oklch(48.4% 0.02 84.6) |
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 #645E52 | 6.43:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #645E52 | 3.26:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #645E52 text on white | 6.43:1 | AA | Lc 82.0 | Fine for body text |
| #645E52 text on black | 3.26:1 | AA large text | Lc -19.9 | 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
#EBEAE8
oklch(93.7% 0.003 84.6)
-
Step 200
200
#DBD9D5
oklch(88.6% 0.006 84.6)
-
Step 300
300
#C3C0BA
oklch(80.8% 0.009 84.6)
-
Step 400
400
#A5A096
oklch(70.7% 0.015 84.6)
-
Step 500
500
#8F897C
oklch(63.2% 0.02 86.2)
-
Step 600
600
#797365
oklch(55.7% 0.022 87.6)
-
Step 700
700 (this color)
#645E52
oklch(48.4% 0.02 84.6)
-
Step 800
800
#534E45
oklch(42.6% 0.016 82.4)
-
Step 900
900
#45413A
oklch(37.7% 0.013 81.7)
-
Step 950
950
#282622
oklch(26.9% 0.008 84.6)
#645E52 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) | #615E51 | 0.005 |
| Deuteranopia (no green cones) | #635F52 | 0.003 |
| Tritanopia (no blue cones) | #675C5B | 0.018 |
| Achromatopsia (no color) | #5F5F5F | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645E52
#645E52
oklch(48.4% 0.02 84.6)
- #595F6B
#595F6B
oklch(48.5% 0.021 264.4)
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 #645E52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.042
- Slate #516572 ΔE 0.052
- Dark Taupe #7F684E ΔE 0.057
- Cocoa #875F42 ΔE 0.062
- Dark Moss Green #606C38 ΔE 0.066
- Dirt Brown #836539 ΔE 0.068
- Dusty Grape #545775 ΔE 0.071
- Mud #735C12 ΔE 0.072
Use #645E52 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.