#666CE2#666CE2

#666CE2 is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.7% C 0.176 H 277.3°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#666CE2
RGB	rgb(102, 108, 226)
HSL	hsl(237, 68%, 64%)
HSV	hsv(237, 55%, 89%)
CMYK	cmyk(54.9%, 52.2%, 0%, 11.4%)
CIE-LAB	lab(50.73, 30.85, -61.04)
CIE-LCH	lch(50.73, 68.39, 296.81°)
OKLab	oklab(58.74% 0.0224 -0.1745)
OKLCH	oklch(58.74% 0.176 277.3)
XYZ	xyz(24.5652, 19.0392, 74.3172)
Luminance	0.1904 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666CE2 #E2DC66

analogous

#66AAE2 #666CE2 #9E66E2

triadic

#666CE2 #E2666C #6CE266

tetradic

#666CE2 #E266AA #E2DC66 #66E29E

square

#666CE2 #E266AA #E2DC66 #66E29E

split-complementary

#666CE2 #E29E66 #AAE266

monochromatic

#2128AD #333BD8 #666CE2 #999DEC #CDCFF6

Accessibility & contrast

On white

4.37

#666CE2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#666CE2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666CE2

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666CE2	#FFFFFF	#000000	##000000
##666CE2	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#297EE6

Deuteranopia (green-blind)

#0E74E0

Tritanopia (blue-blind)

#26879D

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #666ce2;
/* rgb */ color: rgb(102, 108, 226);
/* oklch */ color: oklch(58.7% 0.176 277.3);

Tailwind

colors: {
  custom: {
    50: '#9b96ec',
    500: '#666ce2',
    950: '#000000',
  },
}

SCSS

$custom: #666ce2;
$custom-light: #9b96ec;
$custom-dark: #000000;

JSON

{
  "hex": "#666ce2",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 226
  },
  "hsl": {
    "h": 237.097,
    "s": 68.132,
    "l": 64.314
  },
  "oklch": {
    "l": 0.58741,
    "c": 0.17598,
    "h": 277.3
  },
  "luminance": 0.19041
}

Semantic roles & 50–950 ramp

primary

#666CE2

secondary

#E7E5BC

accent

#C715D0

background

#FAF9FE

surface

#F3F1FD

border

#CDCBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #666CE2

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

Preview Lab → · Contrast checker → · Palette generator →