#646EBC#646EBC

#646EBC is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.6% C 0.120 H 276.3°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#646EBC
RGB	rgb(100, 110, 188)
HSL	hsl(233, 40%, 56%)
HSV	hsv(233, 47%, 74%)
CMYK	cmyk(46.8%, 41.5%, 0%, 26.3%)
CIE-LAB	lab(48.87, 17.30, -42.34)
CIE-LCH	lch(48.87, 45.74, 292.23°)
OKLab	oklab(56.58% 0.0133 -0.1197)
OKLCH	oklch(56.58% 0.12 276.3)
XYZ	xyz(19.9058, 17.4910, 49.8944)
Luminance	0.1749 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EBC #BCB264

analogous

#649ABC #646EBC #8664BC

triadic

#646EBC #BC646E #6EBC64

tetradic

#646EBC #BC649A #BCB264 #64BC86

square

#646EBC #BC649A #BCB264 #64BC86

split-complementary

#646EBC #BC8664 #9ABC64

monochromatic

#323974 #444F9E #646EBC #8F96CE #B9BEE1

Accessibility & contrast

On white

4.67

#646EBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#646EBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646EBC

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EBC	#FFFFFF	#000000	##FFFFFF
##646EBC	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5078BF

Deuteranopia (green-blind)

#4971BA

Tritanopia (blue-blind)

#447E8C

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646ebc;
/* rgb */ color: rgb(100, 110, 188);
/* oklch */ color: oklch(56.6% 0.120 276.3);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#646ebc",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 188
  },
  "hsl": {
    "h": 233.182,
    "s": 39.64,
    "l": 56.471
  },
  "oklch": {
    "l": 0.56576,
    "c": 0.12045,
    "h": 276.3
  },
  "luminance": 0.17492
}

Semantic roles & 50–950 ramp

primary

#646EBC

secondary

#D0CCAC

accent

#C258D0

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646EBC

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

Preview Lab → · Contrast checker → · Palette generator →