#4239B6#4239B6

#4239B6 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.9% C 0.189 H 278.4°. Best body text is #FFFFFF at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#4239B6
RGB	rgb(66, 57, 182)
HSL	hsl(244, 52%, 47%)
HSV	hsv(244, 69%, 71%)
CMYK	cmyk(63.7%, 68.7%, 0%, 28.6%)
CIE-LAB	lab(32.83, 41.39, -64.83)
CIE-LCH	lch(32.83, 76.91, 302.55°)
OKLab	oklab(43.85% 0.0276 -0.187)
OKLCH	oklch(43.85% 0.189 278.4)
XYZ	xyz(12.1507, 7.4609, 45.0467)
Luminance	0.0746 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.83

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4239B6 #ADB639

analogous

#396FB6 #4239B6 #8139B6

triadic

#4239B6 #B64239 #39B642

tetradic

#4239B6 #B6396F #ADB639 #39B681

square

#4239B6 #B6396F #ADB639 #39B681

split-complementary

#4239B6 #B68139 #6FB639

monochromatic

#201C59 #312A87 #4239B6 #675FCD #938EDC

Accessibility & contrast

On white

8.43

#4239B6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#4239B6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239B6

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239B6	#FFFFFF	#000000	##FFFFFF
##4239B6	1.00	8.43	2.49	8.43
#FFFFFF	8.43	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BA

Deuteranopia (green-blind)

#0048B4

Tritanopia (blue-blind)

#005A73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #4239b6;
/* rgb */ color: rgb(66, 57, 182);
/* oklch */ color: oklch(43.9% 0.189 278.4);

Tailwind

colors: {
  custom: {
    50: '#8470cd',
    500: '#4239b6',
    950: '#000000',
  },
}

SCSS

$custom: #4239b6;
$custom-light: #8470cd;
$custom-dark: #000000;

JSON

{
  "hex": "#4239b6",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 182
  },
  "hsl": {
    "h": 244.32,
    "s": 52.301,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43851,
    "c": 0.18903,
    "h": 278.4
  },
  "luminance": 0.07462
}

Semantic roles & 50–950 ramp

primary

#4239B6

secondary

#C1C685

accent

#DC4CD1

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #4239B6

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

Preview Lab → · Contrast checker → · Palette generator →