#6642C4
Closest named color: Bluey Purple (#6241C7). oklch(49.5% 0.192 290.4), rgb(102, 66, 196).
Aa
White text reads best on this color (6.68:1).
About this color
#6642C4 is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.192 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.009 away. White text reads best on it, at 6.68:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.192) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.14:1 |
| White text | 6.68:1 |
Values
| HEX | #6642C4 |
| RGB | rgb(102, 66, 196) |
| HSL | hsl(257, 52%, 51%) |
| OKLCH | oklch(49.5% 0.192 290.4) |
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 #6642C4 | 6.68:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #6642C4 | 3.14:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #6642C4 text on white | 6.68:1 | AA | Lc 82.4 | Fine for body text |
| #6642C4 text on black | 3.14:1 | AA large text | Lc -19.5 | 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
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4FA
oklch(88.5% 0.052 290.1)
-
Step 300
300
#C0B7F9
oklch(81% 0.093 290.4)
-
Step 400
400
#A18EF6
oklch(70.7% 0.149 290.5)
-
Step 500
500
#8C6EF2
oklch(63.1% 0.19 290.4)
-
Step 600
600
#7851E0
oklch(55.6% 0.206 290.6)
-
Step 700
700 (this color)
#6642C4
oklch(49.5% 0.192 290.4)
-
Step 800
800
#52379D
oklch(42.7% 0.157 290.3)
-
Step 900
900
#43317D
oklch(37.7% 0.123 290.1)
-
Step 950
950
#271D49
oklch(26.9% 0.079 290.6)
#6642C4 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) | #005EC8 | 0.106 |
| Deuteranopia (no green cones) | #0059C1 | 0.105 |
| Tritanopia (no blue cones) | #48627D | 0.155 |
| Achromatopsia (no color) | #5C5C5C | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6642C4
#6642C4
oklch(49.5% 0.192 290.4)
- #666700
#666700
oklch(49.6% 0.109 110.4)
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 #6642C4, closest first.
No curated palette has a color within ΔE 0.04 of #6642C4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.009
- Blue With A Hint Of Purple #533CC6 ΔE 0.037
- Blurple #5539CC ΔE 0.038
- Iris #6258C4 ΔE 0.048
- Burple #6832E3 ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.057
- Purple Blue #5D21D0 ΔE 0.058
Use #6642C4 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.