#647EB4#647EB4

#647EB4 is a mid, moderate blue. Relative luminance 0.209; OKLCH L 59.5% C 0.088 H 264.2°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#647EB4
RGB	rgb(100, 126, 180)
HSL	hsl(221, 35%, 55%)
HSV	hsv(221, 44%, 71%)
CMYK	cmyk(44.4%, 30%, 0%, 29.4%)
CIE-LAB	lab(52.87, 5.20, -31.45)
CIE-LCH	lch(52.87, 31.88, 279.39°)
OKLab	oklab(59.53% -0.009 -0.088)
OKLCH	oklch(59.53% 0.088 264.2)
XYZ	xyz(20.9520, 20.9251, 46.1061)
Luminance	0.2093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647EB4 #B49A64

analogous

#64A6B4 #647EB4 #7264B4

triadic

#647EB4 #B4647E #7EB464

tetradic

#647EB4 #B464A6 #B49A64 #64B472

square

#647EB4 #B464A6 #B49A64 #64B472

split-complementary

#647EB4 #B47264 #A6B464

monochromatic

#33456A #476093 #647EB4 #8DA0C8 #B6C3DC

Accessibility & contrast

On white

4.05

#647EB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#647EB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647EB4

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647EB4	#FFFFFF	#000000	##000000
##647EB4	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A82B6

Deuteranopia (green-blind)

#627BB3

Tritanopia (blue-blind)

#478991

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #647eb4;
/* rgb */ color: rgb(100, 126, 180);
/* oklch */ color: oklch(59.5% 0.088 264.2);

Tailwind

colors: {
  custom: {
    50: '#94a3ca',
    500: '#647eb4',
    950: '#000000',
  },
}

SCSS

$custom: #647eb4;
$custom-light: #94a3ca;
$custom-dark: #000000;

JSON

{
  "hex": "#647eb4",
  "rgb": {
    "r": 100,
    "g": 126,
    "b": 180
  },
  "hsl": {
    "h": 220.5,
    "s": 34.783,
    "l": 54.902
  },
  "oklch": {
    "l": 0.59532,
    "c": 0.08845,
    "h": 264.2
  },
  "luminance": 0.20926
}

Semantic roles & 50–950 ramp

primary

#647EB4

secondary

#CBC0A9

accent

#A75DCB

background

#F9FAFC

surface

#F2F3F8

border

#CCCDD1

text

#0D0F13

muted

#7E7F82

Preview Lab

Preview with #647EB4

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

Preview Lab → · Contrast checker → · Palette generator →