#4243B2#4243B2

#4243B2 is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.2% C 0.172 H 276.6°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#4243B2
RGB	rgb(66, 67, 178)
HSL	hsl(239, 46%, 48%)
HSV	hsv(239, 63%, 70%)
CMYK	cmyk(62.9%, 62.4%, 0%, 30.2%)
CIE-LAB	lab(34.77, 33.96, -59.29)
CIE-LCH	lch(34.77, 68.33, 299.81°)
OKLab	oklab(45.16% 0.0199 -0.1707)
OKLCH	oklch(45.16% 0.172 276.6)
XYZ	xyz(12.2872, 8.3859, 43.0820)
Luminance	0.0839 (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

#4243B2 #B2B142

analogous

#427BB2 #4243B2 #7942B2

triadic

#4243B2 #B24243 #43B242

tetradic

#4243B2 #B2427B #B2B142 #42B279

square

#4243B2 #B2427B #B2B142 #42B279

split-complementary

#4243B2 #B27942 #7BB242

monochromatic

#212159 #313285 #4243B2 #6A6AC8 #9697D8

Accessibility & contrast

On white

7.84

#4243B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#4243B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4243B2

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4243B2	#FFFFFF	#000000	##FFFFFF
##4243B2	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B6

Deuteranopia (green-blind)

#004DB0

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4243b2;
/* rgb */ color: rgb(66, 67, 178);
/* oklch */ color: oklch(45.2% 0.172 276.6);

Tailwind

colors: {
  custom: {
    50: '#8377ca',
    500: '#4243b2',
    950: '#000000',
  },
}

SCSS

$custom: #4243b2;
$custom-light: #8377ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4243b2",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 178
  },
  "hsl": {
    "h": 239.464,
    "s": 45.902,
    "l": 47.843
  },
  "oklch": {
    "l": 0.45156,
    "c": 0.17186,
    "h": 276.6
  },
  "luminance": 0.08387
}

Semantic roles & 50–950 ramp

primary

#4243B2

secondary

#C4C38C

accent

#D452D6

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #4243B2

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

Preview Lab → · Contrast checker → · Palette generator →