#66739B#66739B

#66739B is a mid, moderate blue. Relative luminance 0.175; OKLCH L 56.1% C 0.064 H 270.3°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#66739B
RGB	rgb(102, 115, 155)
HSL	hsl(225, 21%, 50%)
HSV	hsv(225, 34%, 61%)
CMYK	cmyk(34.2%, 25.8%, 0%, 39.2%)
CIE-LAB	lab(48.82, 5.17, -23.18)
CIE-LCH	lch(48.82, 23.75, 282.56°)
OKLab	oklab(56.06% 0.0004 -0.0642)
OKLCH	oklch(56.06% 0.064 270.3)
XYZ	xyz(17.5249, 17.4521, 33.4492)
Luminance	0.1745 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66739B #9B8E66

analogous

#668D9B #66739B #73669B

triadic

#66739B #9B6673 #739B66

tetradic

#66739B #9B668D #9B8E66 #669B73

square

#66739B #9B668D #9B8E66 #669B73

split-complementary

#66739B #9B7366 #8D9B66

monochromatic

#353C51 #4D5776 #66739B #8B95B3 #B0B7CB

Accessibility & contrast

On white

4.68

#66739B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#66739B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #66739B

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66739B	#FFFFFF	#000000	##FFFFFF
##66739B	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#66769D

Deuteranopia (green-blind)

#62729A

Tritanopia (blue-blind)

#577B81

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #66739b;
/* rgb */ color: rgb(102, 115, 155);
/* oklch */ color: oklch(56.1% 0.064 270.3);

Tailwind

colors: {
  custom: {
    50: '#939bb8',
    500: '#66739b',
    950: '#000000',
  },
}

SCSS

$custom: #66739b;
$custom-light: #939bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#66739b",
  "rgb": {
    "r": 102,
    "g": 115,
    "b": 155
  },
  "hsl": {
    "h": 225.283,
    "s": 20.949,
    "l": 50.392
  },
  "oklch": {
    "l": 0.56062,
    "c": 0.06424,
    "h": 270.3
  },
  "luminance": 0.17453
}

Semantic roles & 50–950 ramp

primary

#66739B

secondary

#BAB4A3

accent

#A96ABE

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0E11

muted

#7E7E80

Preview Lab

Preview with #66739B

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

Preview Lab → · Contrast checker → · Palette generator →