#664BD5
Closest named color: Bluey Purple (#6241C7). oklch(52.2% 0.201 286.1), rgb(102, 75, 213).
Aa
White text reads best on this color (5.94:1).
About this color
#664BD5 is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.201 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.031 away. White text reads best on it, at 5.94:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.201) |
| Temperature | cool |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #664BD5 |
| RGB | rgb(102, 75, 213) |
| HSL | hsl(252, 62%, 56%) |
| OKLCH | oklch(52.2% 0.201 286.1) |
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 #664BD5 | 5.94:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #664BD5 | 3.53:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #664BD5 text on white | 5.94:1 | AA | Lc 79.2 | Fine for body text |
| #664BD5 text on black | 3.53:1 | 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
#E8E8FC
oklch(93.7% 0.027 285.9)
-
Step 200
200
#D5D5FC
oklch(88.5% 0.053 285.3)
-
Step 300
300
#BBB8FD
oklch(81% 0.097 286)
-
Step 400
400
#9A8FFC
oklch(70.6% 0.156 286.3)
-
Step 500
500
#846FFA
oklch(63.2% 0.199 286.1)
-
Step 600
600
#7052E9
oklch(55.7% 0.216 286.2)
-
Step 700
700 (this color)
#664BD5
oklch(52.2% 0.201 286.1)
-
Step 800
800
#4C37A4
oklch(42.8% 0.167 285.8)
-
Step 900
900
#3F3182
oklch(37.7% 0.13 286.3)
-
Step 950
950
#241E4C
oklch(27% 0.082 285.5)
#664BD5 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) | #0067D9 | 0.099 |
| Deuteranopia (no green cones) | #0060D2 | 0.096 |
| Tritanopia (no blue cones) | #3A6D89 | 0.167 |
| Achromatopsia (no color) | #646464 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664BD5
#664BD5
oklch(52.2% 0.201 286.1)
- #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 #664BD5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.031
- Slate Blue #6A5ACD ΔE 0.037
- Light Indigo #6D5ACF ΔE 0.038
- Iris #6258C4 ΔE 0.040
- Warm Blue #4B57DB ΔE 0.045
- Dark Periwinkle #665FD1 ΔE 0.045
- Burple #6832E3 ΔE 0.046
- Purpley Blue #5F34E7 ΔE 0.050
Use #664BD5 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.