#666BE6#666BE6

#666BE6 is a mid, vivid blue. Relative luminance 0.191; OKLCH L 58.8% C 0.183 H 277.4°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#666BE6
RGB	rgb(102, 107, 230)
HSL	hsl(238, 72%, 65%)
HSV	hsv(238, 56%, 90%)
CMYK	cmyk(55.7%, 53.5%, 0%, 9.8%)
CIE-LAB	lab(50.75, 32.72, -63.26)
CIE-LCH	lch(50.75, 71.22, 297.35°)
OKLab	oklab(58.84% 0.0237 -0.1811)
OKLCH	oklch(58.84% 0.183 277.4)
XYZ	xyz(25.0156, 19.0516, 77.2067)
Luminance	0.1905 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666BE6 #E6E166

analogous

#66ABE6 #666BE6 #A166E6

triadic

#666BE6 #E6666B #6BE666

tetradic

#666BE6 #E666AB #E6E166 #66E6A1

square

#666BE6 #E666AB #E6E166 #66E6A1

split-complementary

#666BE6 #E6A166 #ABE666

monochromatic

#1D23B4 #3138DD #666BE6 #9B9EEF #CFD1F7

Accessibility & contrast

On white

4.37

#666BE6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#666BE6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666BE6

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666BE6	#FFFFFF	#000000	##000000
##666BE6	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)

#1E7EEA

Deuteranopia (green-blind)

#0074E3

Tritanopia (blue-blind)

#1F879E

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #666be6;
/* rgb */ color: rgb(102, 107, 230);
/* oklch */ color: oklch(58.8% 0.183 277.4);

Tailwind

colors: {
  custom: {
    50: '#9b95ef',
    500: '#666be6',
    950: '#000000',
  },
}

SCSS

$custom: #666be6;
$custom-light: #9b95ef;
$custom-dark: #000000;

JSON

{
  "hex": "#666be6",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 230
  },
  "hsl": {
    "h": 237.656,
    "s": 71.91,
    "l": 65.098
  },
  "oklch": {
    "l": 0.58835,
    "c": 0.18266,
    "h": 277.4
  },
  "luminance": 0.19053
}

Semantic roles & 50–950 ramp

primary

#666BE6

secondary

#EAE8BE

accent

#CC12D4

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #666BE6

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

Preview Lab → · Contrast checker → · Palette generator →