#423591#423591

#423591 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.9% C 0.145 H 284.1°. Best body text is #FFFFFF at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#423591
RGB	rgb(66, 53, 145)
HSL	hsl(248, 46%, 39%)
HSV	hsv(248, 63%, 57%)
CMYK	cmyk(54.5%, 63.4%, 0%, 43.1%)
CIE-LAB	lab(28.77, 31.76, -49.14)
CIE-LCH	lch(28.77, 58.51, 302.87°)
OKLab	oklab(39.92% 0.0354 -0.141)
OKLCH	oklch(39.92% 0.145 284.1)
XYZ	xyz(8.6292, 5.7483, 27.4374)
Luminance	0.0575 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423591 #849135

analogous

#355691 #423591 #703591

triadic

#423591 #914235 #359142

tetradic

#423591 #913556 #849135 #359170

square

#423591 #913556 #849135 #359170

split-complementary

#423591 #917035 #569135

monochromatic

#191437 #2E2564 #423591 #5847BC #8174CC

Accessibility & contrast

On white

9.77

#423591 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#423591 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423591

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423591	#FFFFFF	#000000	##FFFFFF
##423591	1.00	9.77	2.15	9.77
#FFFFFF	9.77	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004794

Deuteranopia (green-blind)

#00418F

Tritanopia (blue-blind)

#214B5E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #423591;
/* rgb */ color: rgb(66, 53, 145);
/* oklch */ color: oklch(39.9% 0.145 284.1);

Tailwind

colors: {
  custom: {
    50: '#7e6db2',
    500: '#423591',
    950: '#000000',
  },
}

SCSS

$custom: #423591;
$custom-light: #7e6db2;
$custom-dark: #000000;

JSON

{
  "hex": "#423591",
  "rgb": {
    "r": 66,
    "g": 53,
    "b": 145
  },
  "hsl": {
    "h": 248.478,
    "s": 46.465,
    "l": 38.824
  },
  "oklch": {
    "l": 0.39924,
    "c": 0.14534,
    "h": 284.1
  },
  "luminance": 0.05749
}

Semantic roles & 50–950 ramp

primary

#423591

secondary

#ABB56D

accent

#D652C3

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #423591

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

Preview Lab → · Contrast checker → · Palette generator →