#664682
Closest named color: Twilight (#4E518B). oklch(45.6% 0.101 307.4), rgb(102, 70, 130).
Aa
White text reads best on this color (7.59:1).
About this color
#664682 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.101 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.047 away. White text reads best on it, at 7.59:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.76:1 |
| White text | 7.59:1 |
Values
| HEX | #664682 |
| RGB | rgb(102, 70, 130) |
| HSL | hsl(272, 30%, 39%) |
| OKLCH | oklch(45.6% 0.101 307.4) |
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 #664682 | 7.59:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #664682 | 2.76:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #664682 text on white | 7.59:1 | AAA | Lc 86.3 | Fine for body text |
| #664682 text on black | 2.76:1 | Fails | Lc -15.8 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F3
oklch(93.6% 0.017 308.3)
-
Step 200
200
#DFD4EA
oklch(88.5% 0.032 308.1)
-
Step 300
300
#CBB7DF
oklch(80.9% 0.059 307.6)
-
Step 400
400
#B091CE
oklch(70.7% 0.093 307.3)
-
Step 500
500
#9D75C2
oklch(63.2% 0.12 307.2)
-
Step 600
600
#885CAE
oklch(55.6% 0.13 307.4)
-
Step 700
700
#734B96
oklch(49.1% 0.122 307.1)
-
Step 800
800 (this color)
#664682
oklch(45.6% 0.101 307.4)
-
Step 900
900
#4D3562
oklch(37.7% 0.079 307.6)
-
Step 950
950
#2D1F39
oklch(26.9% 0.05 308.1)
#664682 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) | #385384 | 0.075 |
| Deuteranopia (no green cones) | #405480 | 0.068 |
| Tritanopia (no blue cones) | #62505E | 0.073 |
| Achromatopsia (no color) | #545454 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664682
#664682
oklch(45.6% 0.101 307.4)
- #47611B
#47611B
oklch(45.6% 0.101 127.6)
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 #664682, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.047
- Dusk #4E5481 ΔE 0.053
- Rebecca Purple #663399 ΔE 0.062
- Dusty Grape #545775 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.063
- Light Eggplant #894585 ΔE 0.066
- Blueberry #464196 ΔE 0.068
- Muted Purple #805B87 ΔE 0.076
Use #664682 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.