#423BB0#423BB0

#423BB0 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.179 H 278.6°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#423BB0
RGB	rgb(66, 59, 176)
HSL	hsl(244, 50%, 46%)
HSV	hsv(244, 66%, 69%)
CMYK	cmyk(62.5%, 66.5%, 0%, 31%)
CIE-LAB	lab(32.74, 38.23, -61.41)
CIE-LCH	lch(32.74, 72.34, 301.90°)
OKLab	oklab(43.62% 0.0268 -0.177)
OKLCH	oklch(43.62% 0.179 278.6)
XYZ	xyz(11.6447, 7.4199, 41.8844)
Luminance	0.0742 (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

#423BB0 #A9B03B

analogous

#3B6EB0 #423BB0 #7C3BB0

triadic

#423BB0 #B0423B #3BB042

tetradic

#423BB0 #B03B6E #A9B03B #3BB07C

square

#423BB0 #B03B6E #A9B03B #3BB07C

split-complementary

#423BB0 #B07C3B #6EB03B

monochromatic

#201C54 #312C82 #423BB0 #655FC9 #918DD9

Accessibility & contrast

On white

8.45

#423BB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#423BB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BB0

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BB0	#FFFFFF	#000000	##FFFFFF
##423BB0	1.00	8.45	2.48	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B4

Deuteranopia (green-blind)

#0048AE

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #423bb0;
/* rgb */ color: rgb(66, 59, 176);
/* oklch */ color: oklch(43.6% 0.179 278.6);

Tailwind

colors: {
  custom: {
    50: '#8372c9',
    500: '#423bb0',
    950: '#000000',
  },
}

SCSS

$custom: #423bb0;
$custom-light: #8372c9;
$custom-dark: #000000;

JSON

{
  "hex": "#423bb0",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 176
  },
  "hsl": {
    "h": 243.59,
    "s": 49.787,
    "l": 46.078
  },
  "oklch": {
    "l": 0.43623,
    "c": 0.179,
    "h": 278.6
  },
  "luminance": 0.07421
}

Semantic roles & 50–950 ramp

primary

#423BB0

secondary

#C0C383

accent

#D94ED1

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423BB0

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

Preview Lab → · Contrast checker → · Palette generator →