#663EC2
Closest named color: Bluey Purple (#6241C7). oklch(48.8% 0.194 291.4), rgb(102, 62, 194).
Aa
White text reads best on this color (6.92:1).
About this color
#663EC2 is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.194 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.012 away. White text reads best on it, at 6.92:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.194) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.03:1 |
| White text | 6.92:1 |
Values
| HEX | #663EC2 |
| RGB | rgb(102, 62, 194) |
| HSL | hsl(258, 52%, 50%) |
| OKLCH | oklch(48.8% 0.194 291.4) |
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 #663EC2 | 6.92:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #663EC2 | 3.03:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #663EC2 text on white | 6.92:1 | AA | Lc 83.3 | Fine for body text |
| #663EC2 text on black | 3.03:1 | AA large text | Lc -18.6 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D9D4FA
oklch(88.6% 0.052 291.3)
-
Step 300
300
#C1B6F9
oklch(80.9% 0.094 291.7)
-
Step 400
400
#A38DF6
oklch(70.7% 0.151 291.7)
-
Step 500
500
#8E6DF2
oklch(63.2% 0.191 291.4)
-
Step 600
600
#7A50E1
oklch(55.7% 0.209 291.4)
-
Step 700
700 (this color)
#663EC2
oklch(48.8% 0.194 291.4)
-
Step 800
800
#54359E
oklch(42.7% 0.161 291.7)
-
Step 900
900
#44307D
oklch(37.6% 0.125 291.2)
-
Step 950
950
#281D49
oklch(27% 0.079 291.8)
#663EC2 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) | #005CC6 | 0.110 |
| Deuteranopia (no green cones) | #0057BF | 0.108 |
| Tritanopia (no blue cones) | #495F7B | 0.155 |
| Achromatopsia (no color) | #5A5A5A | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663EC2
#663EC2
oklch(48.8% 0.194 291.4)
- #626500
#626500
oklch(48.8% 0.108 111.8)
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 #663EC2, closest first.
No curated palette has a color within ΔE 0.04 of #663EC2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.012
- Blue With A Hint Of Purple #533CC6 ΔE 0.035
- Blurple #5539CC ΔE 0.037
- Purple Blue #5D21D0 ΔE 0.053
- Burple #6832E3 ΔE 0.054
- Iris #6258C4 ΔE 0.056
- Purpley Blue #5F34E7 ΔE 0.061
- Slate Blue #6A5ACD ΔE 0.063
Use #663EC2 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.