#645251
Closest named color: Brownish Purple (#76424E). oklch(45.6% 0.024 21.8), rgb(100, 82, 81).
Aa
White text reads best on this color (7.32:1).
About this color
#645251 is a medium-dark close to neutral grey. In OKLCH its lightness is 46%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Brownish Purple (#76424E), ΔE 0.052 away. White text reads best on it, at 7.32:1.
| Hue family | Neutrals |
| Lightness | medium-dark (46%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #645251 |
| RGB | rgb(100, 82, 81) |
| HSL | hsl(3, 10%, 35%) |
| OKLCH | oklch(45.6% 0.024 21.8) |
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 #645251 | 7.32:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #645251 | 2.86:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #645251 text on white | 7.32:1 | AAA | Lc 85.4 | Fine for body text |
| #645251 text on black | 2.86:1 | Fails | Lc -16.6 | 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 800.
-
Step 50
50
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#ECE9E8
oklch(93.6% 0.004 39.5)
-
Step 200
200
#DED7D7
oklch(88.5% 0.008 17.3)
-
Step 300
300
#CABDBC
oklch(80.9% 0.015 22.8)
-
Step 400
400
#AE9B9A
oklch(70.6% 0.023 21.3)
-
Step 500
500
#9A8382
oklch(63.1% 0.028 20.9)
-
Step 600
600
#856C6B
oklch(55.5% 0.032 20.8)
-
Step 700
700
#715A59
oklch(49% 0.03 21.2)
-
Step 800
800 (this color)
#645251
oklch(45.6% 0.024 21.8)
-
Step 900
900
#4B3E3D
oklch(37.7% 0.018 23.2)
-
Step 950
950
#2C2424
oklch(26.9% 0.012 17.9)
#645251 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) | #555451 | 0.025 |
| Deuteranopia (no green cones) | #595751 | 0.023 |
| Tritanopia (no blue cones) | #685052 | 0.009 |
| Achromatopsia (no color) | #565656 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645251
#645251
oklch(45.6% 0.024 21.8)
- #485B5D
#485B5D
oklch(45.6% 0.023 204.3)
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 #645251, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.052
- Dusty Grape #545775 ΔE 0.059
- Purple Brown #673A3F ΔE 0.065
- Slate #516572 ΔE 0.066
- Dim Gray #696969 ΔE 0.069
- Dark Mauve #874C62 ΔE 0.073
- YInMn Blue #415A77 ΔE 0.074
- Milk Chocolate #7F4E1E ΔE 0.075
Use #645251 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.