#646EBB#646EBB

#646EBB is a mid, moderate blue. Relative luminance 0.174; OKLCH L 56.5% C 0.119 H 276.3°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#646EBB
RGB	rgb(100, 110, 187)
HSL	hsl(233, 39%, 56%)
HSV	hsv(233, 47%, 73%)
CMYK	cmyk(46.5%, 41.2%, 0%, 26.7%)
CIE-LAB	lab(48.82, 17.00, -41.85)
CIE-LCH	lch(48.82, 45.17, 292.10°)
OKLab	oklab(56.52% 0.0131 -0.1183)
OKLCH	oklch(56.52% 0.119 276.3)
XYZ	xyz(19.7983, 17.4480, 49.3287)
Luminance	0.1745 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EBB #BBB164

analogous

#649ABB #646EBB #8664BB

triadic

#646EBB #BB646E #6EBB64

tetradic

#646EBB #BB649A #BBB164 #64BB86

square

#646EBB #BB649A #BBB164 #64BB86

split-complementary

#646EBB #BB8664 #9ABB64

monochromatic

#323A72 #454F9D #646EBB #8F96CE #B9BEE0

Accessibility & contrast

On white

4.68

#646EBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#646EBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EBB

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EBB	#FFFFFF	#000000	##FFFFFF
##646EBB	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5178BE

Deuteranopia (green-blind)

#4A71B9

Tritanopia (blue-blind)

#457E8B

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646ebb;
/* rgb */ color: rgb(100, 110, 187);
/* oklch */ color: oklch(56.5% 0.119 276.3);

Tailwind

colors: {
  custom: {
    50: '#9597d0',
    500: '#646ebb',
    950: '#000000',
  },
}

SCSS

$custom: #646ebb;
$custom-light: #9597d0;
$custom-dark: #000000;

JSON

{
  "hex": "#646ebb",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 187
  },
  "hsl": {
    "h": 233.103,
    "s": 39.013,
    "l": 56.275
  },
  "oklch": {
    "l": 0.56518,
    "c": 0.119,
    "h": 276.3
  },
  "luminance": 0.17449
}

Semantic roles & 50–950 ramp

primary

#646EBB

secondary

#CFCBAB

accent

#C159CF

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646EBB

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

Preview Lab → · Contrast checker → · Palette generator →