#64739B#64739B

#64739B is a mid, moderate blue. Relative luminance 0.173; OKLCH L 55.9% C 0.065 H 268.4°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#64739B
RGB	rgb(100, 115, 155)
HSL	hsl(224, 22%, 50%)
HSV	hsv(224, 35%, 61%)
CMYK	cmyk(35.5%, 25.8%, 0%, 39.2%)
CIE-LAB	lab(48.68, 4.57, -23.42)
CIE-LCH	lch(48.68, 23.86, 281.03°)
OKLab	oklab(55.91% -0.0018 -0.0649)
OKLCH	oklch(55.91% 0.065 268.4)
XYZ	xyz(17.3009, 17.3366, 33.4387)
Luminance	0.1734 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64739B #9B8C64

analogous

#648F9B #64739B #70649B

triadic

#64739B #9B6473 #739B64

tetradic

#64739B #9B648F #9B8C64 #649B70

square

#64739B #9B648F #9B8C64 #649B70

split-complementary

#64739B #9B7064 #8F9B64

monochromatic

#343C51 #4C5776 #64739B #8995B3 #AEB6CB

Accessibility & contrast

On white

4.70

#64739B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#64739B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #64739B

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64739B	#FFFFFF	#000000	##FFFFFF
##64739B	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#66769D

Deuteranopia (green-blind)

#61719A

Tritanopia (blue-blind)

#547B81

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #64739b;
/* rgb */ color: rgb(100, 115, 155);
/* oklch */ color: oklch(55.9% 0.065 268.4);

Tailwind

colors: {
  custom: {
    50: '#929bb8',
    500: '#64739b',
    950: '#000000',
  },
}

SCSS

$custom: #64739b;
$custom-light: #929bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#64739b",
  "rgb": {
    "r": 100,
    "g": 115,
    "b": 155
  },
  "hsl": {
    "h": 223.636,
    "s": 21.569,
    "l": 50
  },
  "oklch": {
    "l": 0.55914,
    "c": 0.06496,
    "h": 268.4
  },
  "luminance": 0.17337
}

Semantic roles & 50–950 ramp

primary

#64739B

secondary

#BAB3A1

accent

#A76ABE

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0E11

muted

#7E7E80

Preview Lab

Preview with #64739B

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

Preview Lab → · Contrast checker → · Palette generator →