#423FBC#423FBC

#423FBC is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.4% C 0.190 H 276.7°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#423FBC
RGB	rgb(66, 63, 188)
HSL	hsl(241, 50%, 49%)
HSV	hsv(241, 66%, 74%)
CMYK	cmyk(64.9%, 66.5%, 0%, 26.3%)
CIE-LAB	lab(34.69, 39.78, -65.34)
CIE-LCH	lch(34.69, 76.50, 301.34°)
OKLab	oklab(45.35% 0.0223 -0.1885)
OKLCH	oklch(45.35% 0.19 276.7)
XYZ	xyz(13.0984, 8.3430, 48.4873)
Luminance	0.0834 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.13

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423FBC #B9BC3F

analogous

#3F7BBC #423FBC #813FBC

triadic

#423FBC #BC423F #3FBC42

tetradic

#423FBC #BC3F7B #B9BC3F #3FBC81

square

#423FBC #BC3F7B #B9BC3F #3FBC81

split-complementary

#423FBC #BC813F #7BBC3F

monochromatic

#222060 #32308E #423FBC #6D6BCD #9A99DD

Accessibility & contrast

On white

7.87

#423FBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#423FBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FBC

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FBC	#FFFFFF	#000000	##FFFFFF
##423FBC	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C0

Deuteranopia (green-blind)

#004CBA

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #423fbc;
/* rgb */ color: rgb(66, 63, 188);
/* oklch */ color: oklch(45.4% 0.190 276.7);

Tailwind

colors: {
  custom: {
    50: '#8575d1',
    500: '#423fbc',
    950: '#000000',
  },
}

SCSS

$custom: #423fbc;
$custom-light: #8575d1;
$custom-dark: #000000;

JSON

{
  "hex": "#423fbc",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 188
  },
  "hsl": {
    "h": 241.44,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.45353,
    "c": 0.18978,
    "h": 276.7
  },
  "luminance": 0.08344
}

Semantic roles & 50–950 ramp

primary

#423FBC

secondary

#C7C98E

accent

#D94ED6

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #423FBC

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

Preview Lab → · Contrast checker → · Palette generator →