#4239BA#4239BA

#4239BA is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.2% C 0.194 H 278.0°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#4239BA
RGB	rgb(66, 57, 186)
HSL	hsl(244, 53%, 48%)
HSV	hsv(244, 69%, 73%)
CMYK	cmyk(64.5%, 69.4%, 0%, 27.1%)
CIE-LAB	lab(33.20, 42.69, -66.60)
CIE-LCH	lch(33.20, 79.11, 302.66°)
OKLab	oklab(44.22% 0.027 -0.1922)
OKLCH	oklch(44.22% 0.194 278)
XYZ	xyz(12.5700, 7.6287, 47.2549)
Luminance	0.0763 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.88

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4239BA #B1BA39

analogous

#3971BA #4239BA #8239BA

triadic

#4239BA #BA4239 #39BA42

tetradic

#4239BA #BA3971 #B1BA39 #39BA82

square

#4239BA #BA3971 #B1BA39 #39BA82

split-complementary

#4239BA #BA8239 #71BA39

monochromatic

#211C5C #312B8B #4239BA #6961CF #9690DD

Accessibility & contrast

On white

8.31

#4239BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#4239BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239BA

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239BA	#FFFFFF	#000000	##FFFFFF
##4239BA	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BE

Deuteranopia (green-blind)

#0049B8

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4239ba;
/* rgb */ color: rgb(66, 57, 186);
/* oklch */ color: oklch(44.2% 0.194 278.0);

Tailwind

colors: {
  custom: {
    50: '#8571d0',
    500: '#4239ba',
    950: '#000000',
  },
}

SCSS

$custom: #4239ba;
$custom-light: #8571d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4239ba",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 186
  },
  "hsl": {
    "h": 244.186,
    "s": 53.086,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44223,
    "c": 0.19407,
    "h": 278
  },
  "luminance": 0.0763
}

Semantic roles & 50–950 ramp

primary

#4239BA

secondary

#C3C887

accent

#DC4BD2

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4239BA

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

Preview Lab → · Contrast checker → · Palette generator →