#645556
Closest named color: Dusty Grape (#545775). oklch(46.5% 0.02 13.3), rgb(100, 85, 86).
Aa
White text reads best on this color (7.05:1).
About this color
#645556 is a medium-dark close to neutral grey. In OKLCH its lightness is 46%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Dusty Grape (#545775), ΔE 0.054 away. White text reads best on it, at 7.05:1.
| Hue family | Neutrals |
| Lightness | medium-dark (46%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #645556 |
| RGB | rgb(100, 85, 86) |
| HSL | hsl(356, 8%, 36%) |
| OKLCH | oklch(46.5% 0.02 13.3) |
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 #645556 | 7.05:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #645556 | 2.97:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #645556 text on white | 7.05:1 | AAA | Lc 84.5 | Fine for body text |
| #645556 text on black | 2.97:1 | Fails | Lc -17.5 | 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
#ECE9E9
oklch(93.6% 0.003 17.2)
-
Step 200
200
#DCD8D8
oklch(88.5% 0.004 17.2)
-
Step 300
300
#C7BEBF
oklch(80.9% 0.01 9.6)
-
Step 400
400
#AA9D9E
oklch(70.7% 0.015 12.2)
-
Step 500
500
#958586
oklch(63.1% 0.019 13.4)
-
Step 600
600
#7F6E70
oklch(55.5% 0.022 9.8)
-
Step 700
700 (this color)
#645556
oklch(46.5% 0.02 13.3)
-
Step 800
800
#584B4C
oklch(42.6% 0.018 12.6)
-
Step 900
900
#483F3F
oklch(37.7% 0.012 17.7)
-
Step 950
950
#2A2525
oklch(27% 0.008 17.6)
#645556 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) | #575756 | 0.022 |
| Deuteranopia (no green cones) | #5B5A56 | 0.020 |
| Tritanopia (no blue cones) | #675455 | 0.005 |
| Achromatopsia (no color) | #595959 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645556
#645556
oklch(46.5% 0.02 13.3)
- #4D5D5C
#4D5D5C
oklch(46.5% 0.02 191.8)
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 #645556, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.054
- Brownish Purple #76424E ΔE 0.057
- Slate #516572 ΔE 0.057
- Dim Gray #696969 ΔE 0.060
- YInMn Blue #415A77 ΔE 0.069
- Dark Mauve #874C62 ΔE 0.071
- Purple Brown #673A3F ΔE 0.074
- Cocoa #875F42 ΔE 0.078
Use #645556 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.