#644B67
Closest named color: Dusty Grape (#545775). oklch(45% 0.055 322.8), rgb(100, 75, 103).
Aa
White text reads best on this color (7.65:1).
About this color
#644B67 is a dark, muted purple. In OKLCH its lightness is 45%, its chroma 0.055 and its hue 323°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.042 away. White text reads best on it, at 7.65:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | muted (0.055) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.74:1 |
| White text | 7.65:1 |
Values
| HEX | #644B67 |
| RGB | rgb(100, 75, 103) |
| HSL | hsl(294, 16%, 35%) |
| OKLCH | oklch(45% 0.055 322.8) |
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 #644B67 | 7.65:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #644B67 | 2.74:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #644B67 text on white | 7.65:1 | AAA | Lc 86.5 | Fine for body text |
| #644B67 text on black | 2.74:1 | Fails | Lc -15.5 | 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 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
#DFD5E0
oklch(88.4% 0.018 323)
-
Step 300
300
#CBBACD
oklch(80.9% 0.032 322.6)
-
Step 400
400
#B096B3
oklch(70.6% 0.051 322.8)
-
Step 500
500
#9D7CA1
oklch(63% 0.066 322.7)
-
Step 600
600
#88658C
oklch(55.6% 0.072 323)
-
Step 700
700
#735477
oklch(49.1% 0.066 322.6)
-
Step 800
800 (this color)
#644B67
oklch(45% 0.055 322.8)
-
Step 900
900
#4D3A4F
oklch(37.7% 0.043 323.2)
-
Step 950
950
#2D222E
oklch(27% 0.027 323.6)
#644B67 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) | #485268 | 0.048 |
| Deuteranopia (no green cones) | #4E5466 | 0.043 |
| Tritanopia (no blue cones) | #654E55 | 0.034 |
| Achromatopsia (no color) | #535353 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644B67
#644B67
oklch(45% 0.055 322.8)
- #435D41
#435D41
oklch(44.9% 0.055 142.9)
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 #644B67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.042
- Brownish Purple #76424E ΔE 0.050
- Dusk #4E5481 ΔE 0.054
- YInMn Blue #415A77 ΔE 0.065
- Dark Mauve #874C62 ΔE 0.066
- Twilight #4E518B ΔE 0.066
- Purple Brown #673A3F ΔE 0.068
- Slate #516572 ΔE 0.076
Use #644B67 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.