#666AE0#666AE0

#666AE0 is a mid, vivid blue. Relative luminance 0.185; OKLCH L 58.2% C 0.176 H 278.0°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#666AE0
RGB	rgb(102, 106, 224)
HSL	hsl(238, 66%, 64%)
HSV	hsv(238, 54%, 88%)
CMYK	cmyk(54.5%, 52.7%, 0%, 12.2%)
CIE-LAB	lab(50.11, 31.43, -60.91)
CIE-LCH	lch(50.11, 68.54, 297.29°)
OKLab	oklab(58.24% 0.0244 -0.1742)
OKLCH	oklch(58.24% 0.176 278)
XYZ	xyz(24.0838, 18.5131, 72.8109)
Luminance	0.1852 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666AE0 #E0DC66

analogous

#66A7E0 #666AE0 #9F66E0

triadic

#666AE0 #E0666A #6AE066

tetradic

#666AE0 #E066A7 #E0DC66 #66E09F

square

#666AE0 #E066A7 #E0DC66 #66E09F

split-complementary

#666AE0 #E09F66 #A7E066

monochromatic

#2227A9 #3338D6 #666AE0 #999CEA #CCCDF5

Accessibility & contrast

On white

4.47

#666AE0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#666AE0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666AE0

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666AE0	#FFFFFF	#000000	##000000
##666AE0	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#267CE4

Deuteranopia (green-blind)

#0A72DE

Tritanopia (blue-blind)

#29859B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #666ae0;
/* rgb */ color: rgb(102, 106, 224);
/* oklch */ color: oklch(58.2% 0.176 278.0);

Tailwind

colors: {
  custom: {
    50: '#9b94ea',
    500: '#666ae0',
    950: '#000000',
  },
}

SCSS

$custom: #666ae0;
$custom-light: #9b94ea;
$custom-dark: #000000;

JSON

{
  "hex": "#666ae0",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 224
  },
  "hsl": {
    "h": 238.033,
    "s": 66.304,
    "l": 63.922
  },
  "oklch": {
    "l": 0.58235,
    "c": 0.17589,
    "h": 278
  },
  "luminance": 0.18515
}

Semantic roles & 50–950 ramp

primary

#666AE0

secondary

#E6E5BC

accent

#C817CE

background

#FAF9FE

surface

#F3F1FD

border

#CDCBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #666AE0

Body copy rendered with the generated semantic roles for this colour.

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