#647FBB#647FBB

#647FBB is a mid, moderate blue. Relative luminance 0.215; OKLCH L 60.1% C 0.097 H 265.1°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#647FBB
RGB	rgb(100, 127, 187)
HSL	hsl(221, 39%, 56%)
HSV	hsv(221, 47%, 73%)
CMYK	cmyk(46.5%, 32.1%, 0%, 26.7%)
CIE-LAB	lab(53.47, 6.70, -34.53)
CIE-LCH	lch(53.47, 35.18, 280.98°)
OKLab	oklab(60.1% -0.0083 -0.0969)
OKLCH	oklch(60.1% 0.097 265.1)
XYZ	xyz(21.8116, 21.4746, 49.9998)
Luminance	0.2148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647FBB #BBA064

analogous

#64ABBB #647FBB #7564BB

triadic

#647FBB #BB647F #7FBB64

tetradic

#647FBB #BB64AB #BBA064 #64BB75

square

#647FBB #BB64AB #BBA064 #64BB75

split-complementary

#647FBB #BB7564 #ABBB64

monochromatic

#324672 #45609D #647FBB #8FA2CE #B9C5E0

Accessibility & contrast

On white

3.97

#647FBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#647FBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647FBB

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647FBB	#FFFFFF	#000000	##000000
##647FBB	1.00	3.97	5.30	5.30
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6984BE

Deuteranopia (green-blind)

#607CBA

Tritanopia (blue-blind)

#428C95

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #647fbb;
/* rgb */ color: rgb(100, 127, 187);
/* oklch */ color: oklch(60.1% 0.097 265.1);

Tailwind

colors: {
  custom: {
    50: '#94a3cf',
    500: '#647fbb',
    950: '#000000',
  },
}

SCSS

$custom: #647fbb;
$custom-light: #94a3cf;
$custom-dark: #000000;

JSON

{
  "hex": "#647fbb",
  "rgb": {
    "r": 100,
    "g": 127,
    "b": 187
  },
  "hsl": {
    "h": 221.379,
    "s": 39.013,
    "l": 56.275
  },
  "oklch": {
    "l": 0.60101,
    "c": 0.09726,
    "h": 265.1
  },
  "luminance": 0.21476
}

Semantic roles & 50–950 ramp

primary

#647FBB

secondary

#CFC4AB

accent

#AA59CF

background

#F9FAFC

surface

#F2F3F9

border

#CCCDD2

text

#0D0F14

muted

#7E7F82

Preview Lab

Preview with #647FBB

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

Preview Lab → · Contrast checker → · Palette generator →