#423B90#423B90

#423B90 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.9% C 0.136 H 282.3°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#423B90
RGB	rgb(66, 59, 144)
HSL	hsl(245, 42%, 40%)
HSV	hsv(245, 59%, 56%)
CMYK	cmyk(54.2%, 59%, 0%, 43.5%)
CIE-LAB	lab(30.16, 27.62, -46.27)
CIE-LCH	lch(30.16, 53.89, 300.83°)
OKLab	oklab(40.92% 0.0289 -0.1325)
OKLCH	oklch(40.92% 0.136 282.3)
XYZ	xyz(8.8432, 6.2993, 27.1301)
Luminance	0.0630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423B90 #89903B

analogous

#3B5F90 #423B90 #6C3B90

triadic

#423B90 #90423B #3B9042

tetradic

#423B90 #903B5F #89903B #3B906C

square

#423B90 #903B5F #89903B #3B906C

split-complementary

#423B90 #906C3B #5F903B

monochromatic

#1A1739 #2E2965 #423B90 #5951B8 #827CC9

Accessibility & contrast

On white

9.29

#423B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#423B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423B90

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423B90	#FFFFFF	#000000	##FFFFFF
##423B90	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A93

Deuteranopia (green-blind)

#00448E

Tritanopia (blue-blind)

#214F5F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #423b90;
/* rgb */ color: rgb(66, 59, 144);
/* oklch */ color: oklch(40.9% 0.136 282.3);

Tailwind

colors: {
  custom: {
    50: '#7d71b1',
    500: '#423b90',
    950: '#000000',
  },
}

SCSS

$custom: #423b90;
$custom-light: #7d71b1;
$custom-dark: #000000;

JSON

{
  "hex": "#423b90",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 144
  },
  "hsl": {
    "h": 244.941,
    "s": 41.872,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40919,
    "c": 0.13562,
    "h": 282.3
  },
  "luminance": 0.063
}

Semantic roles & 50–950 ramp

primary

#423B90

secondary

#AEB374

accent

#D256C8

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #423B90

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

Preview Lab → · Contrast checker → · Palette generator →