#666BEA#666BEA

#666BEA is a mid, vivid blue. Relative luminance 0.193; OKLCH L 59.1% C 0.188 H 277.3°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#666BEA
RGB	rgb(102, 107, 234)
HSL	hsl(238, 76%, 66%)
HSV	hsv(238, 56%, 92%)
CMYK	cmyk(56.4%, 54.3%, 0%, 8.2%)
CIE-LAB	lab(51.01, 33.99, -65.08)
CIE-LCH	lch(51.01, 73.42, 297.58°)
OKLab	oklab(59.12% 0.0238 -0.1865)
OKLCH	oklch(59.12% 0.188 277.3)
XYZ	xyz(25.5837, 19.2789, 80.1990)
Luminance	0.1928 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666BEA #EAE566

analogous

#66ADEA #666BEA #A366EA

triadic

#666BEA #EA666B #6BEA66

tetradic

#666BEA #EA66AD #EAE566 #66EAA3

square

#666BEA #EA66AD #EAE566 #66EAA3

split-complementary

#666BEA #EAA366 #ADEA66

monochromatic

#1A20BC #3037E3 #666BEA #9C9FF1 #D2D3F9

Accessibility & contrast

On white

4.32

#666BEA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#666BEA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666BEA

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666BEA	#FFFFFF	#000000	##000000
##666BEA	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#137FEE

Deuteranopia (green-blind)

#0074E7

Tritanopia (blue-blind)

#1788A0

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #666bea;
/* rgb */ color: rgb(102, 107, 234);
/* oklch */ color: oklch(59.1% 0.188 277.3);

Tailwind

colors: {
  custom: {
    50: '#9c95f1',
    500: '#666bea',
    950: '#000000',
  },
}

SCSS

$custom: #666bea;
$custom-light: #9c95f1;
$custom-dark: #000000;

JSON

{
  "hex": "#666bea",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 234
  },
  "hsl": {
    "h": 237.727,
    "s": 75.862,
    "l": 65.882
  },
  "oklch": {
    "l": 0.59116,
    "c": 0.18798,
    "h": 277.3
  },
  "luminance": 0.19281
}

Semantic roles & 50–950 ramp

primary

#666BEA

secondary

#ECEAC0

accent

#D00DD8

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666BEA

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

Preview Lab → · Contrast checker → · Palette generator →