#647FCB#647FCB

#647FCB is a mid, moderate blue. Relative luminance 0.222; OKLCH L 61.0% C 0.120 H 268.0°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#647FCB
RGB	rgb(100, 127, 203)
HSL	hsl(224, 50%, 59%)
HSV	hsv(224, 51%, 80%)
CMYK	cmyk(50.7%, 37.4%, 0%, 20.4%)
CIE-LAB	lab(54.24, 11.61, -42.44)
CIE-LCH	lch(54.24, 44.00, 285.30°)
OKLab	oklab(60.95% -0.0043 -0.1199)
OKLCH	oklch(60.95% 0.12 268)
XYZ	xyz(23.6209, 22.1983, 59.5283)
Luminance	0.2220 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647FCB #CBB064

analogous

#64B2CB #647FCB #7D64CB

triadic

#647FCB #CB647F #7FCB64

tetradic

#647FCB #CB64B2 #CBB064 #64CB7D

square

#647FCB #CB64B2 #CBB064 #64CB7D

split-complementary

#647FCB #CB7D64 #B2CB64

monochromatic

#2D4587 #3D5CB5 #647FCB #92A5DA #C0CBEA

Accessibility & contrast

On white

3.86

#647FCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#647FCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647FCB

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647FCB	#FFFFFF	#000000	##000000
##647FCB	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6187CE

Deuteranopia (green-blind)

#567DC9

Tritanopia (blue-blind)

#368F9B

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #647fcb;
/* rgb */ color: rgb(100, 127, 203);
/* oklch */ color: oklch(61.0% 0.120 268.0);

Tailwind

colors: {
  custom: {
    50: '#96a3db',
    500: '#647fcb',
    950: '#000000',
  },
}

SCSS

$custom: #647fcb;
$custom-light: #96a3db;
$custom-dark: #000000;

JSON

{
  "hex": "#647fcb",
  "rgb": {
    "r": 100,
    "g": 127,
    "b": 203
  },
  "hsl": {
    "h": 224.272,
    "s": 49.758,
    "l": 59.412
  },
  "oklch": {
    "l": 0.60952,
    "c": 0.11998,
    "h": 268
  },
  "luminance": 0.222
}

Semantic roles & 50–950 ramp

primary

#647FCB

secondary

#D9CFB1

accent

#B54FD9

background

#F9FAFD

surface

#F2F3FB

border

#CCCDD4

text

#0E0F15

muted

#7E7F83

Preview Lab

Preview with #647FCB

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

Preview Lab → · Contrast checker → · Palette generator →