#645651
Closest named color: Dim Gray (#696969). oklch(46.5% 0.02 40.7), rgb(100, 86, 81).
Aa
White text reads best on this color (7.01:1).
About this color
#645651 is a medium-dark close to neutral grey. In OKLCH its lightness is 47%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.059 away. White text reads best on it, at 7.01:1.
| Hue family | Neutrals |
| Lightness | medium-dark (47%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 2.99:1 |
| White text | 7.01:1 |
Values
| HEX | #645651 |
| RGB | rgb(100, 86, 81) |
| HSL | hsl(16, 10%, 35%) |
| OKLCH | oklch(46.5% 0.02 40.7) |
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 #645651 | 7.01:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #645651 | 2.99:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #645651 text on white | 7.01:1 | AAA | Lc 84.3 | Fine for body text |
| #645651 text on black | 2.99:1 | Fails | Lc -17.7 | 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
#F6F5F5
oklch(97.1% 0.001 17.2)
-
Step 100
100
#ECE9E8
oklch(93.6% 0.004 39.5)
-
Step 200
200
#DCD8D6
oklch(88.5% 0.005 48.7)
-
Step 300
300
#C6BFBC
oklch(80.9% 0.009 44.9)
-
Step 400
400
#AA9E99
oklch(70.8% 0.016 44.1)
-
Step 500
500
#958680
oklch(63.2% 0.02 43.1)
-
Step 600
600
#7F6F6A
oklch(55.5% 0.022 38.1)
-
Step 700
700 (this color)
#645651
oklch(46.5% 0.02 40.7)
-
Step 800
800
#574C48
oklch(42.6% 0.016 41.1)
-
Step 900
900
#483F3C
oklch(37.6% 0.014 39.3)
-
Step 950
950
#2A2523
oklch(26.9% 0.008 43.1)
#645651 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) | #595751 | 0.018 |
| Deuteranopia (no green cones) | #5C5A51 | 0.017 |
| Tritanopia (no blue cones) | #685455 | 0.012 |
| Achromatopsia (no color) | #595959 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645651
#645651
oklch(46.5% 0.02 40.7)
- #4D5C62
#4D5C62
oklch(46.4% 0.021 224)
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 #645651, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.059
- Slate #516572 ΔE 0.060
- Brownish Purple #76424E ΔE 0.061
- Dusty Grape #545775 ΔE 0.062
- Milk Chocolate #7F4E1E ΔE 0.072
- Cocoa #875F42 ΔE 0.073
- YInMn Blue #415A77 ΔE 0.075
- Dark Taupe #7F684E ΔE 0.075
Use #645651 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.