#666ABC#666ABC

#666ABC is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.9% C 0.126 H 279.4°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#666ABC
RGB	rgb(102, 106, 188)
HSL	hsl(237, 39%, 57%)
HSV	hsv(237, 46%, 74%)
CMYK	cmyk(45.7%, 43.6%, 0%, 26.3%)
CIE-LAB	lab(47.96, 20.25, -43.78)
CIE-LCH	lch(47.96, 48.24, 294.82°)
OKLab	oklab(55.92% 0.0205 -0.1239)
OKLCH	oklch(55.92% 0.126 279.4)
XYZ	xyz(19.7079, 16.7627, 49.7643)
Luminance	0.1676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666ABC #BCB866

analogous

#6695BC #666ABC #8D66BC

triadic

#666ABC #BC666A #6ABC66

tetradic

#666ABC #BC6695 #BCB866 #66BC8D

square

#666ABC #BC6695 #BCB866 #66BC8D

split-complementary

#666ABC #BC8D66 #95BC66

monochromatic

#333675 #464A9F #666ABC #9193CF #BBBDE1

Accessibility & contrast

On white

4.82

#666ABC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#666ABC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666ABC

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666ABC	#FFFFFF	#000000	##FFFFFF
##666ABC	1.00	4.82	4.35	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A75BF

Deuteranopia (green-blind)

#446FBA

Tritanopia (blue-blind)

#497B8A

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #666abc;
/* rgb */ color: rgb(102, 106, 188);
/* oklch */ color: oklch(55.9% 0.126 279.4);

Tailwind

colors: {
  custom: {
    50: '#9694d0',
    500: '#666abc',
    950: '#000000',
  },
}

SCSS

$custom: #666abc;
$custom-light: #9694d0;
$custom-dark: #000000;

JSON

{
  "hex": "#666abc",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 188
  },
  "hsl": {
    "h": 237.209,
    "s": 39.091,
    "l": 56.863
  },
  "oklch": {
    "l": 0.55916,
    "c": 0.1256,
    "h": 279.4
  },
  "luminance": 0.16764
}

Semantic roles & 50–950 ramp

primary

#666ABC

secondary

#D0CFAD

accent

#CA59CF

background

#F9F9FC

surface

#F2F1F9

border

#CCCBD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #666ABC

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

Preview Lab → · Contrast checker → · Palette generator →