#664679
Closest named color: Dusk (#4E5481). oklch(45.1% 0.089 312.1), rgb(102, 70, 121).
Aa
White text reads best on this color (7.72:1).
About this color
#664679 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.089 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.052 away. White text reads best on it, at 7.72:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.71:1 |
| White text | 7.72:1 |
Values
| HEX | #664679 |
| RGB | rgb(102, 70, 121) |
| HSL | hsl(278, 27%, 37%) |
| OKLCH | oklch(45.1% 0.089 312.1) |
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 #664679 | 7.72:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #664679 | 2.71:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #664679 text on white | 7.72:1 | AAA | Lc 86.7 | Fine for body text |
| #664679 text on black | 2.71:1 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F1
oklch(93.6% 0.015 312.2)
-
Step 200
200
#E0D4E7
oklch(88.5% 0.029 313.3)
-
Step 300
300
#CCB8D9
oklch(81% 0.051 312.1)
-
Step 400
400
#B292C6
oklch(70.7% 0.082 312.1)
-
Step 500
500
#9F76B8
oklch(63.1% 0.106 312)
-
Step 600
600
#8A5EA4
oklch(55.7% 0.115 312)
-
Step 700
700
#754D8C
oklch(49.1% 0.107 312.2)
-
Step 800
800 (this color)
#664679
oklch(45.1% 0.089 312.1)
-
Step 900
900
#4E365C
oklch(37.7% 0.07 312.3)
-
Step 950
950
#2E2036
oklch(27.1% 0.044 312.7)
#664679 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) | #3C517B | 0.070 |
| Deuteranopia (no green cones) | #445378 | 0.063 |
| Tritanopia (no blue cones) | #644D5A | 0.061 |
| Achromatopsia (no color) | #535353 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664679
#664679
oklch(45.1% 0.089 312.1)
- #436028
#436028
oklch(45.2% 0.09 131.8)
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 #664679, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.052
- Twilight #4E518B ΔE 0.052
- Dusty Grape #545775 ΔE 0.056
- Light Eggplant #894585 ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.070
- Rebecca Purple #663399 ΔE 0.074
- Brownish Purple #76424E ΔE 0.075
- Blueberry #464196 ΔE 0.077
Use #664679 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.