#647CBB#647CBB

#647CBB is a mid, moderate blue. Relative luminance 0.207; OKLCH L 59.5% C 0.101 H 267.4°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#647CBB
RGB	rgb(100, 124, 187)
HSL	hsl(223, 39%, 56%)
HSV	hsv(223, 47%, 73%)
CMYK	cmyk(46.5%, 33.7%, 0%, 26.7%)
CIE-LAB	lab(52.63, 8.49, -35.84)
CIE-LCH	lch(52.63, 36.83, 283.33°)
OKLab	oklab(59.46% -0.0045 -0.1007)
OKLCH	oklch(59.46% 0.101 267.4)
XYZ	xyz(21.4300, 20.7112, 49.8725)
Luminance	0.2071 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CBB #BBA364

analogous

#64A8BB #647CBB #7864BB

triadic

#647CBB #BB647C #7CBB64

tetradic

#647CBB #BB64A8 #BBA364 #64BB78

square

#647CBB #BB64A8 #BBA364 #64BB78

split-complementary

#647CBB #BB7864 #A8BB64

monochromatic

#324472 #455D9D #647CBB #8FA0CE #B9C4E0

Accessibility & contrast

On white

4.08

#647CBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.14

#647CBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CBB

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CBB	#FFFFFF	#000000	##000000
##647CBB	1.00	4.08	5.14	5.14
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.14	21.00	1.00	1.00
##000000	5.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6582BE

Deuteranopia (green-blind)

#5C7ABA

Tritanopia (blue-blind)

#438993

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #647cbb;
/* rgb */ color: rgb(100, 124, 187);
/* oklch */ color: oklch(59.5% 0.101 267.4);

Tailwind

colors: {
  custom: {
    50: '#94a1cf',
    500: '#647cbb',
    950: '#000000',
  },
}

SCSS

$custom: #647cbb;
$custom-light: #94a1cf;
$custom-dark: #000000;

JSON

{
  "hex": "#647cbb",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 187
  },
  "hsl": {
    "h": 223.448,
    "s": 39.013,
    "l": 56.275
  },
  "oklch": {
    "l": 0.59455,
    "c": 0.10081,
    "h": 267.4
  },
  "luminance": 0.20712
}

Semantic roles & 50–950 ramp

primary

#647CBB

secondary

#CFC5AB

accent

#AE59CF

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0F14

muted

#7E7E82

Preview Lab

Preview with #647CBB

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

Preview Lab → · Contrast checker → · Palette generator →