#644357
Closest named color: Brownish Purple (#76424E). oklch(42.7% 0.054 342.6), rgb(100, 67, 87).
Aa
White text reads best on this color (8.45:1).
About this color
#644357 is a dark, muted purple. In OKLCH its lightness is 43%, its chroma 0.054 and its hue 343°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.037 away. White text reads best on it, at 8.45:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | muted (0.054) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.48:1 |
| White text | 8.45:1 |
Values
| HEX | #644357 |
| RGB | rgb(100, 67, 87) |
| HSL | hsl(324, 20%, 33%) |
| OKLCH | oklch(42.7% 0.054 342.6) |
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 #644357 | 8.45:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #644357 | 2.48:1 | Fails | Lc 14.9 | Not readable |
| #644357 text on white | 8.45:1 | AAA | Lc 89.1 | Fine for body text |
| #644357 text on black | 2.48:1 | Fails | Lc -13.2 | Not readable |
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
#F8F4F6
oklch(97.1% 0.005 345.3)
-
Step 100
100
#EFE7EB
oklch(93.5% 0.01 345.4)
-
Step 200
200
#E2D5DC
oklch(88.5% 0.017 343.7)
-
Step 300
300
#D0B9C6
oklch(80.9% 0.031 342.8)
-
Step 400
400
#B894A9
oklch(70.6% 0.052 342.6)
-
Step 500
500
#A67A94
oklch(63.1% 0.065 342.9)
-
Step 600
600
#91637E
oklch(55.7% 0.07 343.6)
-
Step 700
700
#7B526B
oklch(49.2% 0.065 342.5)
-
Step 800
800 (this color)
#644357
oklch(42.7% 0.054 342.6)
-
Step 900
900
#523948
oklch(37.8% 0.042 342.6)
-
Step 950
950
#30212A
oklch(27% 0.028 342.4)
#644357 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) | #454A58 | 0.055 |
| Deuteranopia (no green cones) | #4D4F56 | 0.051 |
| Tritanopia (no blue cones) | #68434A | 0.023 |
| Achromatopsia (no color) | #4D4D4D | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644357
#644357
oklch(42.7% 0.054 342.6)
- #315846
#315846
oklch(42.6% 0.054 163)
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 #644357, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.037
- Purple Brown #673A3F ΔE 0.039
- Dusty Grape #545775 ΔE 0.067
- Dark Mauve #874C62 ΔE 0.074
- Dusk #4E5481 ΔE 0.078
- Charcoal Grey #3C4142 ΔE 0.081
- YInMn Blue #415A77 ΔE 0.085
- Twilight #4E518B ΔE 0.090
Use #644357 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.