#647CA6#647CA6

#647CA6 is a mid, moderate blue. Relative luminance 0.199; OKLCH L 58.4% C 0.071 H 261.4°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#647CA6
RGB	rgb(100, 124, 166)
HSL	hsl(218, 27%, 52%)
HSV	hsv(218, 40%, 65%)
CMYK	cmyk(39.8%, 25.3%, 0%, 34.9%)
CIE-LAB	lab(51.70, 2.31, -25.18)
CIE-LCH	lch(51.70, 25.28, 275.24°)
OKLab	oklab(58.42% -0.0106 -0.07)
OKLCH	oklch(58.42% 0.071 261.4)
XYZ	xyz(19.3440, 19.8768, 38.8863)
Luminance	0.1988 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CA6 #A68E64

analogous

#649DA6 #647CA6 #6D64A6

triadic

#647CA6 #A6647C #7CA664

tetradic

#647CA6 #A6649D #A68E64 #64A66D

square

#647CA6 #A6649D #A68E64 #64A66D

split-complementary

#647CA6 #A66D64 #9DA664

monochromatic

#34435B #4B5F82 #647CA6 #8B9DBC #B2BED3

Accessibility & contrast

On white

4.22

#647CA6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#647CA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CA6

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CA6	#FFFFFF	#000000	##000000
##647CA6	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7FA8

Deuteranopia (green-blind)

#6678A5

Tritanopia (blue-blind)

#4E858A

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #647ca6;
/* rgb */ color: rgb(100, 124, 166);
/* oklch */ color: oklch(58.4% 0.071 261.4);

Tailwind

colors: {
  custom: {
    50: '#92a1c0',
    500: '#647ca6',
    950: '#000000',
  },
}

SCSS

$custom: #647ca6;
$custom-light: #92a1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#647ca6",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 166
  },
  "hsl": {
    "h": 218.182,
    "s": 27.049,
    "l": 52.157
  },
  "oklch": {
    "l": 0.5842,
    "c": 0.07078,
    "h": 261.4
  },
  "luminance": 0.19878
}

Semantic roles & 50–950 ramp

primary

#647CA6

secondary

#C1B7A4

accent

#A164C3

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0F12

muted

#7E7E81

Preview Lab

Preview with #647CA6

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

Preview Lab → · Contrast checker → · Palette generator →