#664AD7
Closest named color: Bluey Purple (#6241C7). oklch(52.2% 0.205 286), rgb(102, 74, 215).
Aa
White text reads best on this color (5.95:1).
About this color
#664AD7 is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.205 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.032 away. White text reads best on it, at 5.95:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.52:1 |
| White text | 5.95:1 |
Values
| HEX | #664AD7 |
| RGB | rgb(102, 74, 215) |
| HSL | hsl(252, 64%, 57%) |
| OKLCH | oklch(52.2% 0.205 286) |
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 #664AD7 | 5.95:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #664AD7 | 3.52:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #664AD7 text on white | 5.95:1 | AA | Lc 79.2 | Fine for body text |
| #664AD7 text on black | 3.52:1 | AA large text | Lc -22.6 | 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 700.
-
Step 50
50
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E8E8FD
oklch(93.7% 0.028 285.8)
-
Step 200
200
#D5D5FD
oklch(88.6% 0.055 285.2)
-
Step 300
300
#BBB7FE
oklch(80.8% 0.1 286.5)
-
Step 400
400
#9A8FFE
oklch(70.8% 0.159 286.1)
-
Step 500
500
#846EFC
oklch(63.1% 0.203 286.1)
-
Step 600
600
#7051EB
oklch(55.7% 0.22 286.1)
-
Step 700
700 (this color)
#664AD7
oklch(52.2% 0.205 286)
-
Step 800
800
#4C36A5
oklch(42.7% 0.169 285.8)
-
Step 900
900
#3F3183
oklch(37.8% 0.132 286.1)
-
Step 950
950
#241D4D
oklch(26.9% 0.085 285.8)
#664AD7 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) | #0067DB | 0.100 |
| Deuteranopia (no green cones) | #005FD4 | 0.096 |
| Tritanopia (no blue cones) | #386D8A | 0.170 |
| Achromatopsia (no color) | #646464 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664AD7
#664AD7
oklch(52.2% 0.205 286)
- #726D00
#726D00
oklch(52.2% 0.112 106.5)
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 #664AD7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.032
- Slate Blue #6A5ACD ΔE 0.040
- Light Indigo #6D5ACF ΔE 0.040
- Burple #6832E3 ΔE 0.043
- Iris #6258C4 ΔE 0.043
- Warm Blue #4B57DB ΔE 0.045
- Purpley Blue #5F34E7 ΔE 0.047
- Dark Periwinkle #665FD1 ΔE 0.048
Use #664AD7 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.