#666DE2#666DE2

#666DE2 is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.9% C 0.175 H 277.0°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#666DE2
RGB	rgb(102, 109, 226)
HSL	hsl(237, 68%, 64%)
HSV	hsv(237, 55%, 89%)
CMYK	cmyk(54.9%, 51.8%, 0%, 11.4%)
CIE-LAB	lab(50.98, 30.24, -60.64)
CIE-LCH	lch(50.98, 67.76, 296.51°)
OKLab	oklab(58.93% 0.0214 -0.1734)
OKLCH	oklch(58.93% 0.175 277)
XYZ	xyz(24.6712, 19.2514, 74.3526)
Luminance	0.1925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666DE2 #E2DB66

analogous

#66ABE2 #666DE2 #9D66E2

triadic

#666DE2 #E2666D #6DE266

tetradic

#666DE2 #E266AB #E2DB66 #66E29D

square

#666DE2 #E266AB #E2DB66 #66E29D

split-complementary

#666DE2 #E29D66 #ABE266

monochromatic

#2129AD #333CD8 #666DE2 #999EEC #CDCFF6

Accessibility & contrast

On white

4.33

#666DE2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#666DE2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666DE2

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666DE2	#FFFFFF	#000000	##000000
##666DE2	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C7FE6

Deuteranopia (green-blind)

#1474E0

Tritanopia (blue-blind)

#26879D

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #666de2;
/* rgb */ color: rgb(102, 109, 226);
/* oklch */ color: oklch(58.9% 0.175 277.0);

Tailwind

colors: {
  custom: {
    50: '#9b96ec',
    500: '#666de2',
    950: '#000000',
  },
}

SCSS

$custom: #666de2;
$custom-light: #9b96ec;
$custom-dark: #000000;

JSON

{
  "hex": "#666de2",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 226
  },
  "hsl": {
    "h": 236.613,
    "s": 68.132,
    "l": 64.314
  },
  "oklch": {
    "l": 0.58926,
    "c": 0.17469,
    "h": 277
  },
  "luminance": 0.19253
}

Semantic roles & 50–950 ramp

primary

#666DE2

secondary

#E7E5BC

accent

#C615D0

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #666DE2

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

Preview Lab → · Contrast checker → · Palette generator →