#666BAF#666BAF

#666BAF is a mid, moderate blue. Relative luminance 0.164; OKLCH L 55.4% C 0.105 H 279.2°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#666BAF
RGB	rgb(102, 107, 175)
HSL	hsl(236, 31%, 54%)
HSV	hsv(236, 42%, 69%)
CMYK	cmyk(41.7%, 38.9%, 0%, 31.4%)
CIE-LAB	lab(47.54, 15.75, -36.90)
CIE-LCH	lch(47.54, 40.12, 293.11°)
OKLab	oklab(55.37% 0.0168 -0.1038)
OKLCH	oklch(55.37% 0.105 279.2)
XYZ	xyz(18.4728, 16.4345, 42.7480)
Luminance	0.1643 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666BAF #AFAA66

analogous

#6690AF #666BAF #8666AF

triadic

#666BAF #AF666B #6BAF66

tetradic

#666BAF #AF6690 #AFAA66 #66AF86

square

#666BAF #AF6690 #AFAA66 #66AF86

split-complementary

#666BAF #AF8666 #90AF66

monochromatic

#353866 #4A4F8E #666BAF #8E92C4 #B6B9D9

Accessibility & contrast

On white

4.90

#666BAF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#666BAF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666BAF

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666BAF	#FFFFFF	#000000	##FFFFFF
##666BAF	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5374B2

Deuteranopia (green-blind)

#4F6EAD

Tritanopia (blue-blind)

#4F7984

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #666baf;
/* rgb */ color: rgb(102, 107, 175);
/* oklch */ color: oklch(55.4% 0.105 279.2);

Tailwind

colors: {
  custom: {
    50: '#9595c7',
    500: '#666baf',
    950: '#000000',
  },
}

SCSS

$custom: #666baf;
$custom-light: #9595c7;
$custom-dark: #000000;

JSON

{
  "hex": "#666baf",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 175
  },
  "hsl": {
    "h": 235.89,
    "s": 31.33,
    "l": 54.314
  },
  "oklch": {
    "l": 0.55371,
    "c": 0.10514,
    "h": 279.2
  },
  "luminance": 0.16435
}

Semantic roles & 50–950 ramp

primary

#666BAF

secondary

#C8C6A9

accent

#C060C8

background

#F9F9FC

surface

#F2F1F8

border

#CCCBD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #666BAF

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

Preview Lab → · Contrast checker → · Palette generator →