#666BE7#666BE7

#666BE7 is a mid, vivid blue. Relative luminance 0.191; OKLCH L 58.9% C 0.184 H 277.4°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#666BE7
RGB	rgb(102, 107, 231)
HSL	hsl(238, 73%, 65%)
HSV	hsv(238, 56%, 91%)
CMYK	cmyk(55.8%, 53.7%, 0%, 9.4%)
CIE-LAB	lab(50.81, 33.04, -63.72)
CIE-LCH	lch(50.81, 71.77, 297.41°)
OKLab	oklab(58.9% 0.0237 -0.1825)
OKLCH	oklch(58.9% 0.184 277.4)
XYZ	xyz(25.1564, 19.1080, 77.9484)
Luminance	0.1911 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666BE7 #E7E266

analogous

#66ACE7 #666BE7 #A166E7

triadic

#666BE7 #E7666B #6BE766

tetradic

#666BE7 #E766AC #E7E266 #66E7A1

square

#666BE7 #E766AC #E7E266 #66E7A1

split-complementary

#666BE7 #E7A166 #ACE766

monochromatic

#1D23B6 #3138DF #666BE7 #9B9EEF #D0D1F8

Accessibility & contrast

On white

4.36

#666BE7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#666BE7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666BE7

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666BE7	#FFFFFF	#000000	##000000
##666BE7	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B7EEB

Deuteranopia (green-blind)

#0074E4

Tritanopia (blue-blind)

#1E889F

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #666be7;
/* rgb */ color: rgb(102, 107, 231);
/* oklch */ color: oklch(58.9% 0.184 277.4);

Tailwind

colors: {
  custom: {
    50: '#9c95ef',
    500: '#666be7',
    950: '#000000',
  },
}

SCSS

$custom: #666be7;
$custom-light: #9c95ef;
$custom-dark: #000000;

JSON

{
  "hex": "#666be7",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 231
  },
  "hsl": {
    "h": 237.674,
    "s": 72.881,
    "l": 65.294
  },
  "oklch": {
    "l": 0.58905,
    "c": 0.18399,
    "h": 277.4
  },
  "luminance": 0.1911
}

Semantic roles & 50–950 ramp

primary

#666BE7

secondary

#EAE8BF

accent

#CD11D5

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666BE7

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

Preview Lab → · Contrast checker → · Palette generator →