#423CC7#423CC7

#423CC7 is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 45.9% C 0.207 H 276.4°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#423CC7
RGB	rgb(66, 60, 199)
HSL	hsl(243, 55%, 51%)
HSV	hsv(243, 70%, 78%)
CMYK	cmyk(66.8%, 69.8%, 0%, 22%)
CIE-LAB	lab(35.03, 45.16, -71.22)
CIE-LCH	lch(35.03, 84.34, 302.38°)
OKLab	oklab(45.9% 0.023 -0.2057)
OKLCH	oklch(45.9% 0.207 276.4)
XYZ	xyz(14.1681, 8.5122, 54.9181)
Luminance	0.0851 (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

#423CC7 #C1C73C

analogous

#3C7BC7 #423CC7 #873CC7

triadic

#423CC7 #C7423C #3CC742

tetradic

#423CC7 #C73C7B #C1C73C #3CC787

square

#423CC7 #C73C7B #C1C73C #3CC787

split-complementary

#423CC7 #C7873C #7BC73C

monochromatic

#221E6A #312C9A #423CC7 #706CD5 #9E9BE2

Accessibility & contrast

On white

7.77

#423CC7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#423CC7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423CC7

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423CC7	#FFFFFF	#000000	##FFFFFF
##423CC7	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058CB

Deuteranopia (green-blind)

#004CC4

Tritanopia (blue-blind)

#00627D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #423cc7;
/* rgb */ color: rgb(66, 60, 199);
/* oklch */ color: oklch(45.9% 0.207 276.4);

Tailwind

colors: {
  custom: {
    50: '#8773d9',
    500: '#423cc7',
    950: '#000000',
  },
}

SCSS

$custom: #423cc7;
$custom-light: #8773d9;
$custom-dark: #000000;

JSON

{
  "hex": "#423cc7",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 199
  },
  "hsl": {
    "h": 242.59,
    "s": 55.378,
    "l": 50.784
  },
  "oklch": {
    "l": 0.45901,
    "c": 0.20698,
    "h": 276.4
  },
  "luminance": 0.08513
}

Semantic roles & 50–950 ramp

primary

#423CC7

secondary

#CCCE91

accent

#DF49D8

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #423CC7

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

Preview Lab → · Contrast checker → · Palette generator →