#647BB0#647BB0

#647BB0 is a mid, moderate blue. Relative luminance 0.200; OKLCH L 58.7% C 0.086 H 265.8°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#647BB0
RGB	rgb(100, 123, 176)
HSL	hsl(222, 32%, 54%)
HSV	hsv(222, 43%, 69%)
CMYK	cmyk(43.2%, 30.1%, 0%, 31%)
CIE-LAB	lab(51.85, 5.80, -30.73)
CIE-LCH	lch(51.85, 31.28, 280.69°)
OKLab	oklab(58.68% -0.0062 -0.0859)
OKLCH	oklch(58.68% 0.086 265.8)
XYZ	xyz(20.1725, 20.0087, 43.8650)
Luminance	0.2001 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BB0 #B09964

analogous

#64A1B0 #647BB0 #7364B0

triadic

#647BB0 #B0647B #7BB064

tetradic

#647BB0 #B064A1 #B09964 #64B073

square

#647BB0 #B064A1 #B09964 #64B073

split-complementary

#647BB0 #B07364 #A1B064

monochromatic

#344366 #495E8E #647BB0 #8D9EC5 #B5C0D9

Accessibility & contrast

On white

4.20

#647BB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#647BB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BB0

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BB0	#FFFFFF	#000000	##000000
##647BB0	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#687FB2

Deuteranopia (green-blind)

#6178AF

Tritanopia (blue-blind)

#49868E

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #647bb0;
/* rgb */ color: rgb(100, 123, 176);
/* oklch */ color: oklch(58.7% 0.086 265.8);

Tailwind

colors: {
  custom: {
    50: '#93a1c8',
    500: '#647bb0',
    950: '#000000',
  },
}

SCSS

$custom: #647bb0;
$custom-light: #93a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#647bb0",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 176
  },
  "hsl": {
    "h": 221.842,
    "s": 32.479,
    "l": 54.118
  },
  "oklch": {
    "l": 0.58679,
    "c": 0.08617,
    "h": 265.8
  },
  "luminance": 0.2001
}

Semantic roles & 50–950 ramp

primary

#647BB0

secondary

#C8BEA8

accent

#A95FC9

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0E13

muted

#7E7E82

Preview Lab

Preview with #647BB0

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

Preview Lab → · Contrast checker → · Palette generator →