#647BB9#647BB9

#647BB9 is a mid, moderate blue. Relative luminance 0.204; OKLCH L 59.1% C 0.099 H 267.8°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#647BB9
RGB	rgb(100, 123, 185)
HSL	hsl(224, 38%, 56%)
HSV	hsv(224, 46%, 73%)
CMYK	cmyk(45.9%, 33.5%, 0%, 27.5%)
CIE-LAB	lab(52.26, 8.49, -35.27)
CIE-LCH	lch(52.26, 36.28, 283.53°)
OKLab	oklab(59.14% -0.0038 -0.0991)
OKLCH	oklch(59.14% 0.099 267.8)
XYZ	xyz(21.0927, 20.3768, 48.7112)
Luminance	0.2038 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BB9 #B9A264

analogous

#64A5B9 #647BB9 #7764B9

triadic

#647BB9 #B9647B #7BB964

tetradic

#647BB9 #B964A5 #B9A264 #64B977

square

#647BB9 #B964A5 #B9A264 #64B977

split-complementary

#647BB9 #B97764 #A5B964

monochromatic

#334370 #465D9A #647BB9 #8E9FCC #B8C3DF

Accessibility & contrast

On white

4.14

#647BB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#647BB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BB9

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BB9	#FFFFFF	#000000	##000000
##647BB9	1.00	4.14	5.08	5.08
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6481BC

Deuteranopia (green-blind)

#5C79B8

Tritanopia (blue-blind)

#448891

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #647bb9;
/* rgb */ color: rgb(100, 123, 185);
/* oklch */ color: oklch(59.1% 0.099 267.8);

Tailwind

colors: {
  custom: {
    50: '#94a0ce',
    500: '#647bb9',
    950: '#000000',
  },
}

SCSS

$custom: #647bb9;
$custom-light: #94a0ce;
$custom-dark: #000000;

JSON

{
  "hex": "#647bb9",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 185
  },
  "hsl": {
    "h": 223.765,
    "s": 37.778,
    "l": 55.882
  },
  "oklch": {
    "l": 0.59136,
    "c": 0.09914,
    "h": 267.8
  },
  "luminance": 0.20378
}

Semantic roles & 50–950 ramp

primary

#647BB9

secondary

#CEC4AB

accent

#AE5ACE

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0E13

muted

#7E7E82

Preview Lab

Preview with #647BB9

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

Preview Lab → · Contrast checker → · Palette generator →