#647EB7#647EB7

#647EB7 is a mid, moderate blue. Relative luminance 0.210; OKLCH L 59.7% C 0.093 H 265.0°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#647EB7
RGB	rgb(100, 126, 183)
HSL	hsl(221, 37%, 55%)
HSV	hsv(221, 45%, 72%)
CMYK	cmyk(45.4%, 31.1%, 0%, 28.2%)
CIE-LAB	lab(53.00, 6.09, -32.96)
CIE-LCH	lch(53.00, 33.52, 280.47°)
OKLab	oklab(59.68% -0.0081 -0.0924)
OKLCH	oklch(59.68% 0.093 265)
XYZ	xyz(21.2609, 21.0487, 47.7331)
Luminance	0.2105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647EB7 #B79D64

analogous

#64A7B7 #647EB7 #7364B7

triadic

#647EB7 #B7647E #7EB764

tetradic

#647EB7 #B764A7 #B79D64 #64B773

square

#647EB7 #B764A7 #B79D64 #64B773

split-complementary

#647EB7 #B77364 #A7B764

monochromatic

#33456E #466097 #647EB7 #8EA1CA #B8C4DE

Accessibility & contrast

On white

4.03

#647EB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#647EB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647EB7

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647EB7	#FFFFFF	#000000	##000000
##647EB7	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6983B9

Deuteranopia (green-blind)

#617BB6

Tritanopia (blue-blind)

#458A92

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #647eb7;
/* rgb */ color: rgb(100, 126, 183);
/* oklch */ color: oklch(59.7% 0.093 265.0);

Tailwind

colors: {
  custom: {
    50: '#94a3cd',
    500: '#647eb7',
    950: '#000000',
  },
}

SCSS

$custom: #647eb7;
$custom-light: #94a3cd;
$custom-dark: #000000;

JSON

{
  "hex": "#647eb7",
  "rgb": {
    "r": 100,
    "g": 126,
    "b": 183
  },
  "hsl": {
    "h": 221.205,
    "s": 36.564,
    "l": 55.49
  },
  "oklch": {
    "l": 0.59682,
    "c": 0.09273,
    "h": 265
  },
  "luminance": 0.2105
}

Semantic roles & 50–950 ramp

primary

#647EB7

secondary

#CDC2AA

accent

#A95BCD

background

#F9FAFC

surface

#F2F3F9

border

#CCCDD2

text

#0D0F13

muted

#7E7F82

Preview Lab

Preview with #647EB7

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

Preview Lab → · Contrast checker → · Palette generator →