#647DBB#647DBB

#647DBB is a mid, moderate blue. Relative luminance 0.210; OKLCH L 59.7% C 0.100 H 266.7°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#647DBB
RGB	rgb(100, 125, 187)
HSL	hsl(223, 39%, 56%)
HSV	hsv(223, 47%, 73%)
CMYK	cmyk(46.5%, 33.2%, 0%, 26.7%)
CIE-LAB	lab(52.91, 7.89, -35.40)
CIE-LCH	lch(52.91, 36.27, 282.57°)
OKLab	oklab(59.67% -0.0058 -0.0994)
OKLCH	oklch(59.67% 0.1 266.7)
XYZ	xyz(21.5559, 20.9631, 49.9145)
Luminance	0.2096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647DBB #BBA264

analogous

#64A9BB #647DBB #7764BB

triadic

#647DBB #BB647D #7DBB64

tetradic

#647DBB #BB64A9 #BBA264 #64BB77

square

#647DBB #BB64A9 #BBA264 #64BB77

split-complementary

#647DBB #BB7764 #A9BB64

monochromatic

#324572 #455E9D #647DBB #8FA1CE #B9C4E0

Accessibility & contrast

On white

4.04

#647DBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#647DBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647DBB

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647DBB	#FFFFFF	#000000	##000000
##647DBB	1.00	4.04	5.19	5.19
#FFFFFF	4.04	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)

#6683BE

Deuteranopia (green-blind)

#5D7BBA

Tritanopia (blue-blind)

#438A93

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #647dbb;
/* rgb */ color: rgb(100, 125, 187);
/* oklch */ color: oklch(59.7% 0.100 266.7);

Tailwind

colors: {
  custom: {
    50: '#94a2cf',
    500: '#647dbb',
    950: '#000000',
  },
}

SCSS

$custom: #647dbb;
$custom-light: #94a2cf;
$custom-dark: #000000;

JSON

{
  "hex": "#647dbb",
  "rgb": {
    "r": 100,
    "g": 125,
    "b": 187
  },
  "hsl": {
    "h": 222.759,
    "s": 39.013,
    "l": 56.275
  },
  "oklch": {
    "l": 0.5967,
    "c": 0.09961,
    "h": 266.7
  },
  "luminance": 0.20964
}

Semantic roles & 50–950 ramp

primary

#647DBB

secondary

#CFC5AB

accent

#AD59CF

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0F14

muted

#7E7E82

Preview Lab

Preview with #647DBB

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

Preview Lab → · Contrast checker → · Palette generator →