#423BB6#423BB6

#423BB6 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.2% C 0.187 H 278.0°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#423BB6
RGB	rgb(66, 59, 182)
HSL	hsl(243, 51%, 47%)
HSV	hsv(243, 68%, 71%)
CMYK	cmyk(63.7%, 67.6%, 0%, 28.6%)
CIE-LAB	lab(33.27, 40.20, -64.12)
CIE-LCH	lch(33.27, 75.68, 302.09°)
OKLab	oklab(44.17% 0.0261 -0.1849)
OKLCH	oklch(44.17% 0.187 278)
XYZ	xyz(12.2515, 7.6626, 45.0803)
Luminance	0.0766 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.46

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423BB6 #AFB63B

analogous

#3B71B6 #423BB6 #803BB6

triadic

#423BB6 #B6423B #3BB642

tetradic

#423BB6 #B63B71 #AFB63B #3BB680

square

#423BB6 #B63B71 #AFB63B #3BB680

split-complementary

#423BB6 #B6803B #71B63B

monochromatic

#201D5A #312C88 #423BB6 #6862CC #9590DB

Accessibility & contrast

On white

8.29

#423BB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#423BB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BB6

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BB6	#FFFFFF	#000000	##FFFFFF
##423BB6	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BA

Deuteranopia (green-blind)

#0049B4

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #423bb6;
/* rgb */ color: rgb(66, 59, 182);
/* oklch */ color: oklch(44.2% 0.187 278.0);

Tailwind

colors: {
  custom: {
    50: '#8472cd',
    500: '#423bb6',
    950: '#000000',
  },
}

SCSS

$custom: #423bb6;
$custom-light: #8472cd;
$custom-dark: #000000;

JSON

{
  "hex": "#423bb6",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 182
  },
  "hsl": {
    "h": 243.415,
    "s": 51.037,
    "l": 47.255
  },
  "oklch": {
    "l": 0.44165,
    "c": 0.18673,
    "h": 278
  },
  "luminance": 0.07664
}

Semantic roles & 50–950 ramp

primary

#423BB6

secondary

#C2C687

accent

#DB4DD2

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #423BB6

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

Preview Lab → · Contrast checker → · Palette generator →