#644B63
Closest named color: Dusty Grape (#545775). oklch(44.8% 0.05 327.7), rgb(100, 75, 99).
Aa
White text reads best on this color (7.69:1).
About this color
#644B63 is a dark, muted purple. In OKLCH its lightness is 45%, its chroma 0.050 and its hue 328°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.044 away. White text reads best on it, at 7.69:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | muted (0.050) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.72:1 |
| White text | 7.69:1 |
Values
| HEX | #644B63 |
| RGB | rgb(100, 75, 99) |
| HSL | hsl(302, 14%, 34%) |
| OKLCH | oklch(44.8% 0.05 327.7) |
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 #644B63 | 7.69:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #644B63 | 2.72:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #644B63 text on white | 7.69:1 | AAA | Lc 86.7 | Fine for body text |
| #644B63 text on black | 2.72:1 | Fails | Lc -15.4 | 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
#F7F4F7
oklch(97% 0.005 325.6)
-
Step 100
100
#EDE8ED
oklch(93.6% 0.009 325.6)
-
Step 200
200
#DFD6DF
oklch(88.6% 0.016 325.7)
-
Step 300
300
#CBBACA
oklch(80.8% 0.029 327.6)
-
Step 400
400
#B197B0
oklch(70.8% 0.046 327.3)
-
Step 500
500
#9E7D9C
oklch(63.1% 0.06 328.2)
-
Step 600
600
#886687
oklch(55.6% 0.065 327.4)
-
Step 700
700
#735572
oklch(49.1% 0.059 327.5)
-
Step 800
800 (this color)
#644B63
oklch(44.8% 0.05 327.7)
-
Step 900
900
#4D3A4C
oklch(37.6% 0.039 328)
-
Step 950
950
#2D222D
oklch(26.9% 0.026 326.3)
#644B63 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) | #4A5164 | 0.045 |
| Deuteranopia (no green cones) | #4F5462 | 0.042 |
| Tritanopia (no blue cones) | #664D53 | 0.029 |
| Achromatopsia (no color) | #535353 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644B63
#644B63
oklch(44.8% 0.05 327.7)
- #425D45
#425D45
oklch(44.9% 0.051 147.6)
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 #644B63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.044
- Brownish Purple #76424E ΔE 0.046
- Dusk #4E5481 ΔE 0.058
- Purple Brown #673A3F ΔE 0.063
- Dark Mauve #874C62 ΔE 0.065
- YInMn Blue #415A77 ΔE 0.066
- Twilight #4E518B ΔE 0.072
- Slate #516572 ΔE 0.076
Use #644B63 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.