#644677
Closest named color: Dusk (#4E5481). oklch(44.8% 0.085 311.4), rgb(100, 70, 119).
Aa
White text reads best on this color (7.82:1).
About this color
#644677 is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.085 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.050 away. White text reads best on it, at 7.82:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.085) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.68:1 |
| White text | 7.82:1 |
Values
| HEX | #644677 |
| RGB | rgb(100, 70, 119) |
| HSL | hsl(277, 26%, 37%) |
| OKLCH | oklch(44.8% 0.085 311.4) |
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 #644677 | 7.82:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #644677 | 2.68:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #644677 text on white | 7.82:1 | AAA | Lc 87.0 | Fine for body text |
| #644677 text on black | 2.68:1 | Fails | Lc -15.1 | 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 800.
-
Step 50
50
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F1
oklch(93.6% 0.015 312.2)
-
Step 200
200
#DFD4E7
oklch(88.4% 0.028 311.3)
-
Step 300
300
#CBB8D9
oklch(80.9% 0.05 310.9)
-
Step 400
400
#B193C5
oklch(70.8% 0.079 311.5)
-
Step 500
500
#9E77B7
oklch(63.1% 0.103 311.5)
-
Step 600
600
#885FA2
oklch(55.5% 0.11 311.3)
-
Step 700
700
#744E8B
oklch(49.1% 0.103 311.7)
-
Step 800
800 (this color)
#644677
oklch(44.8% 0.085 311.4)
-
Step 900
900
#4D375B
oklch(37.7% 0.066 311.5)
-
Step 950
950
#2D2035
oklch(26.9% 0.042 312)
#644677 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) | #3D5079 | 0.065 |
| Deuteranopia (no green cones) | #445376 | 0.061 |
| Tritanopia (no blue cones) | #624D59 | 0.059 |
| Achromatopsia (no color) | #525252 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644677
#644677
oklch(44.8% 0.085 311.4)
- #435E29
#435E29
oklch(44.7% 0.085 131.4)
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 #644677, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.050
- Twilight #4E518B ΔE 0.051
- Dusty Grape #545775 ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.069
- Light Eggplant #894585 ΔE 0.073
- Brownish Purple #76424E ΔE 0.073
- YInMn Blue #415A77 ΔE 0.075
- Blueberry #464196 ΔE 0.077
Use #644677 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.