#647BBD#647BBD

#647BBD is a mid, moderate blue. Relative luminance 0.205; OKLCH L 59.3% C 0.105 H 268.5°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#647BBD
RGB	rgb(100, 123, 189)
HSL	hsl(224, 40%, 57%)
HSV	hsv(224, 47%, 74%)
CMYK	cmyk(47.1%, 34.9%, 0%, 25.9%)
CIE-LAB	lab(52.45, 9.70, -37.27)
CIE-LCH	lch(52.45, 38.51, 284.59°)
OKLab	oklab(59.35% -0.0027 -0.1049)
OKLCH	oklch(59.35% 0.105 268.5)
XYZ	xyz(21.5209, 20.5481, 50.9664)
Luminance	0.2055 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BBD #BDA664

analogous

#64A8BD #647BBD #7A64BD

triadic

#647BBD #BD647B #7BBD64

tetradic

#647BBD #BD64A8 #BDA664 #64BD7A

square

#647BBD #BD64A8 #BDA664 #64BD7A

split-complementary

#647BBD #BD7A64 #A8BD64

monochromatic

#324375 #445CA0 #647BBD #8FA0CF #BAC4E2

Accessibility & contrast

On white

4.11

#647BBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#647BBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BBD

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BBD	#FFFFFF	#000000	##000000
##647BBD	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6381C0

Deuteranopia (green-blind)

#5A7ABC

Tritanopia (blue-blind)

#428993

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #647bbd;
/* rgb */ color: rgb(100, 123, 189);
/* oklch */ color: oklch(59.3% 0.105 268.5);

Tailwind

colors: {
  custom: {
    50: '#95a0d1',
    500: '#647bbd',
    950: '#000000',
  },
}

SCSS

$custom: #647bbd;
$custom-light: #95a0d1;
$custom-dark: #000000;

JSON

{
  "hex": "#647bbd",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 189
  },
  "hsl": {
    "h": 224.494,
    "s": 40.271,
    "l": 56.667
  },
  "oklch": {
    "l": 0.59346,
    "c": 0.1049,
    "h": 268.5
  },
  "luminance": 0.20549
}

Semantic roles & 50–950 ramp

primary

#647BBD

secondary

#D1C7AC

accent

#B158D0

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0E14

muted

#7E7E82

Preview Lab

Preview with #647BBD

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

Preview Lab → · Contrast checker → · Palette generator →