#4243C3#4243C3

#4243C3 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.6% C 0.194 H 275.5°. Best body text is #FFFFFF at 7.44:1 contrast (WCAG AA passes).

Color values

HEX	#4243C3
RGB	rgb(66, 67, 195)
HSL	hsl(240, 52%, 51%)
HSV	hsv(240, 66%, 76%)
CMYK	cmyk(66.2%, 65.6%, 0%, 23.5%)
CIE-LAB	lab(36.20, 39.70, -66.97)
CIE-LCH	lch(36.20, 77.85, 300.66°)
OKLab	oklab(46.64% 0.0186 -0.1932)
OKLCH	oklch(46.64% 0.194 275.5)
XYZ	xyz(14.1010, 9.1115, 52.6348)
Luminance	0.0911 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4243C3 #C3C242

analogous

#4283C3 #4243C3 #8142C3

triadic

#4243C3 #C34243 #43C342

tetradic

#4243C3 #C34283 #C3C242 #42C381

square

#4243C3 #C34283 #C3C242 #42C381

split-complementary

#4243C3 #C38142 #83C342

monochromatic

#212269 #303198 #4243C3 #7071D2 #9F9FE0

Accessibility & contrast

On white

7.44

#4243C3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#4243C3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4243C3

7.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4243C3	#FFFFFF	#000000	##FFFFFF
##4243C3	1.00	7.44	2.82	7.44
#FFFFFF	7.44	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC7

Deuteranopia (green-blind)

#004FC1

Tritanopia (blue-blind)

#00647D

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #4243c3;
/* rgb */ color: rgb(66, 67, 195);
/* oklch */ color: oklch(46.6% 0.194 275.5);

Tailwind

colors: {
  custom: {
    50: '#8678d6',
    500: '#4243c3',
    950: '#000000',
  },
}

SCSS

$custom: #4243c3;
$custom-light: #8678d6;
$custom-dark: #000000;

JSON

{
  "hex": "#4243c3",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 195
  },
  "hsl": {
    "h": 239.535,
    "s": 51.807,
    "l": 51.176
  },
  "oklch": {
    "l": 0.46637,
    "c": 0.19413,
    "h": 275.5
  },
  "luminance": 0.09113
}

Semantic roles & 50–950 ramp

primary

#4243C3

secondary

#CDCC94

accent

#DA4DDB

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0D0914

muted

#7D7B83

Preview Lab

Preview with #4243C3

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

Preview Lab → · Contrast checker → · Palette generator →