#645451
Closest named color: Brownish Purple (#76424E). oklch(46.1% 0.022 30.4), rgb(100, 84, 81).
Aa
White text reads best on this color (7.17:1).
About this color
#645451 is a medium-dark close to neutral grey. In OKLCH its lightness is 46%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Brownish Purple (#76424E), ΔE 0.056 away. White text reads best on it, at 7.17:1.
| Hue family | Neutrals |
| Lightness | medium-dark (46%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #645451 |
| RGB | rgb(100, 84, 81) |
| HSL | hsl(9, 10%, 35%) |
| OKLCH | oklch(46.1% 0.022 30.4) |
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 #645451 | 7.17:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #645451 | 2.92:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #645451 text on white | 7.17:1 | AAA | Lc 84.9 | Fine for body text |
| #645451 text on black | 2.92:1 | Fails | Lc -17.1 | 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
#DDD8D7
oklch(88.6% 0.006 31.1)
-
Step 300
300
#C7BEBC
oklch(80.8% 0.011 32.5)
-
Step 400
400
#AB9D9A
oklch(70.7% 0.017 32)
-
Step 500
500
#968582
oklch(63.1% 0.021 29.6)
-
Step 600
600
#816F6B
oklch(55.7% 0.024 32.6)
-
Step 700
700 (this color)
#645451
oklch(46.1% 0.022 30.4)
-
Step 800
800
#594B49
oklch(42.6% 0.019 27.5)
-
Step 900
900
#493F3D
oklch(37.7% 0.014 31.2)
-
Step 950
950
#2B2524
oklch(27.1% 0.009 29)
#645451 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) | #575651 | 0.022 |
| Deuteranopia (no green cones) | #5B5951 | 0.020 |
| Tritanopia (no blue cones) | #685253 | 0.010 |
| Achromatopsia (no color) | #575757 | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645451
#645451
oklch(46.1% 0.022 30.4)
- #4B5C5F
#4B5C5F
oklch(46.2% 0.021 209.5)
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 #645451, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.056
- Dusty Grape #545775 ΔE 0.060
- Slate #516572 ΔE 0.063
- Dim Gray #696969 ΔE 0.064
- Purple Brown #673A3F ΔE 0.071
- Milk Chocolate #7F4E1E ΔE 0.073
- YInMn Blue #415A77 ΔE 0.074
- Dark Mauve #874C62 ΔE 0.074
Use #645451 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.