#647BB6#647BB6

#647BB6 is a mid, moderate blue. Relative luminance 0.203; OKLCH L 59.0% C 0.095 H 267.2°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#647BB6
RGB	rgb(100, 123, 182)
HSL	hsl(223, 36%, 55%)
HSV	hsv(223, 45%, 71%)
CMYK	cmyk(45.1%, 32.4%, 0%, 28.6%)
CIE-LAB	lab(52.12, 7.59, -33.77)
CIE-LCH	lch(52.12, 34.61, 282.66°)
OKLab	oklab(58.98% -0.0046 -0.0947)
OKLCH	oklch(58.98% 0.095 267.2)
XYZ	xyz(20.7793, 20.2515, 47.0609)
Luminance	0.2025 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BB6 #B69F64

analogous

#64A4B6 #647BB6 #7664B6

triadic

#647BB6 #B6647B #7BB664

tetradic

#647BB6 #B664A4 #B69F64 #64B676

square

#647BB6 #B664A4 #B69F64 #64B676

split-complementary

#647BB6 #B67664 #A4B664

monochromatic

#33436C #475D96 #647BB6 #8E9ECA #B7C2DD

Accessibility & contrast

On white

4.16

#647BB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#647BB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BB6

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BB6	#FFFFFF	#000000	##000000
##647BB6	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6680B8

Deuteranopia (green-blind)

#5D79B5

Tritanopia (blue-blind)

#468790

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #647bb6;
/* rgb */ color: rgb(100, 123, 182);
/* oklch */ color: oklch(59.0% 0.095 267.2);

Tailwind

colors: {
  custom: {
    50: '#94a1cc',
    500: '#647bb6',
    950: '#000000',
  },
}

SCSS

$custom: #647bb6;
$custom-light: #94a1cc;
$custom-dark: #000000;

JSON

{
  "hex": "#647bb6",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 182
  },
  "hsl": {
    "h": 223.171,
    "s": 35.965,
    "l": 55.294
  },
  "oklch": {
    "l": 0.58981,
    "c": 0.09482,
    "h": 267.2
  },
  "luminance": 0.20253
}

Semantic roles & 50–950 ramp

primary

#647BB6

secondary

#CCC2AA

accent

#AD5CCC

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0E13

muted

#7E7E82

Preview Lab

Preview with #647BB6

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

Preview Lab → · Contrast checker → · Palette generator →