#663ABB
Closest named color: Bluey Purple (#6241C7). oklch(47.6% 0.191 293.5), rgb(102, 58, 187).
Aa
White text reads best on this color (7.27:1).
About this color
#663ABB is a medium-dark, vivid purple. In OKLCH its lightness is 48%, its chroma 0.191 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.024 away. White text reads best on it, at 7.27:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.191) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 2.88:1 |
| White text | 7.27:1 |
Values
| HEX | #663ABB |
| RGB | rgb(102, 58, 187) |
| HSL | hsl(260, 53%, 48%) |
| OKLCH | oklch(47.6% 0.191 293.5) |
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 #663ABB | 7.27:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #663ABB | 2.88:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #663ABB text on white | 7.27:1 | AAA | Lc 84.6 | Fine for body text |
| #663ABB text on black | 2.88:1 | Fails | Lc -17.4 | 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 700.
-
Step 50
50
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7FB
oklch(93.6% 0.027 292.8)
-
Step 200
200
#DAD3F9
oklch(88.4% 0.052 293.7)
-
Step 300
300
#C3B6F7
oklch(81% 0.092 293.4)
-
Step 400
400
#A68DF3
oklch(70.8% 0.147 293.6)
-
Step 500
500
#916CEF
oklch(63.1% 0.189 293.2)
-
Step 600
600
#7D4FDD
oklch(55.5% 0.206 293.5)
-
Step 700
700 (this color)
#663ABB
oklch(47.6% 0.191 293.5)
-
Step 800
800
#56359B
oklch(42.7% 0.158 293.5)
-
Step 900
900
#46307B
oklch(37.7% 0.122 293.2)
-
Step 950
950
#291D48
oklch(27% 0.077 293.4)
#663ABB 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) | #0058BF | 0.113 |
| Deuteranopia (no green cones) | #0054B8 | 0.112 |
| Tritanopia (no blue cones) | #4D5A76 | 0.150 |
| Achromatopsia (no color) | #575757 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663ABB
#663ABB
oklch(47.6% 0.191 293.5)
- #5D6200
#5D6200
oklch(47.6% 0.106 113.2)
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 #663ABB, closest first.
No curated palette has a color within ΔE 0.04 of #663ABB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.024
- Blue With A Hint Of Purple #533CC6 ΔE 0.038
- Blurple #5539CC ΔE 0.042
- Purple Blue #5D21D0 ΔE 0.053
- Rebecca Purple #663399 ΔE 0.056
- Grape #7209B7 ΔE 0.061
- Burple #6832E3 ΔE 0.063
- Iris #6258C4 ΔE 0.066
Use #663ABB 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.