#66739D#66739D

#66739D is a mid, moderate blue. Relative luminance 0.175; OKLCH L 56.2% C 0.067 H 270.9°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#66739D
RGB	rgb(102, 115, 157)
HSL	hsl(226, 22%, 51%)
HSV	hsv(226, 35%, 62%)
CMYK	cmyk(35%, 26.8%, 0%, 38.4%)
CIE-LAB	lab(48.91, 5.72, -24.23)
CIE-LCH	lch(48.91, 24.89, 283.28°)
OKLab	oklab(56.16% 0.001 -0.0672)
OKLCH	oklch(56.16% 0.067 270.9)
XYZ	xyz(17.6943, 17.5199, 34.3411)
Luminance	0.1752 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66739D #9D9066

analogous

#668E9D #66739D #74669D

triadic

#66739D #9D6673 #739D66

tetradic

#66739D #9D668E #9D9066 #669D74

square

#66739D #9D668E #9D9066 #669D74

split-complementary

#66739D #9D7466 #8E9D66

monochromatic

#353C53 #4D5779 #66739D #8B95B5 #B1B7CD

Accessibility & contrast

On white

4.66

#66739D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#66739D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #66739D

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66739D	#FFFFFF	#000000	##FFFFFF
##66739D	1.00	4.66	4.50	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#66779F

Deuteranopia (green-blind)

#61729C

Tritanopia (blue-blind)

#567B82

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #66739d;
/* rgb */ color: rgb(102, 115, 157);
/* oklch */ color: oklch(56.2% 0.067 270.9);

Tailwind

colors: {
  custom: {
    50: '#939bba',
    500: '#66739d',
    950: '#000000',
  },
}

SCSS

$custom: #66739d;
$custom-light: #939bba;
$custom-dark: #000000;

JSON

{
  "hex": "#66739d",
  "rgb": {
    "r": 102,
    "g": 115,
    "b": 157
  },
  "hsl": {
    "h": 225.818,
    "s": 21.912,
    "l": 50.784
  },
  "oklch": {
    "l": 0.56155,
    "c": 0.06723,
    "h": 270.9
  },
  "luminance": 0.17521
}

Semantic roles & 50–950 ramp

primary

#66739D

secondary

#BCB6A3

accent

#AA69BE

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0E11

muted

#7E7E80

Preview Lab

Preview with #66739D

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

Preview Lab → · Contrast checker → · Palette generator →