#423D91#423D91

#423D91 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.4% C 0.134 H 281.5°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#423D91
RGB	rgb(66, 61, 145)
HSL	hsl(244, 41%, 40%)
HSV	hsv(244, 58%, 57%)
CMYK	cmyk(54.5%, 57.9%, 0%, 43.1%)
CIE-LAB	lab(30.73, 26.66, -45.95)
CIE-LCH	lch(30.73, 53.13, 300.12°)
OKLab	oklab(41.37% 0.0267 -0.1315)
OKLCH	oklch(41.37% 0.134 281.5)
XYZ	xyz(9.0248, 6.5395, 27.5693)
Luminance	0.0654 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423D91 #8C913D

analogous

#3D6291 #423D91 #6C3D91

triadic

#423D91 #91423D #3D9142

tetradic

#423D91 #913D62 #8C913D #3D916C

square

#423D91 #913D62 #8C913D #3D916C

split-complementary

#423D91 #916C3D #62913D

monochromatic

#1B193B #2E2B66 #423D91 #5A54B7 #847FC9

Accessibility & contrast

On white

9.10

#423D91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#423D91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423D91

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423D91	#FFFFFF	#000000	##FFFFFF
##423D91	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B94

Deuteranopia (green-blind)

#00458F

Tritanopia (blue-blind)

#205061

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #423d91;
/* rgb */ color: rgb(66, 61, 145);
/* oklch */ color: oklch(41.4% 0.134 281.5);

Tailwind

colors: {
  custom: {
    50: '#7d72b2',
    500: '#423d91',
    950: '#000000',
  },
}

SCSS

$custom: #423d91;
$custom-light: #7d72b2;
$custom-dark: #000000;

JSON

{
  "hex": "#423d91",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 145
  },
  "hsl": {
    "h": 243.571,
    "s": 40.777,
    "l": 40.392
  },
  "oklch": {
    "l": 0.41372,
    "c": 0.13422,
    "h": 281.5
  },
  "luminance": 0.0654
}

Semantic roles & 50–950 ramp

primary

#423D91

secondary

#B0B377

accent

#D157C9

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #423D91

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

Preview Lab → · Contrast checker → · Palette generator →