#4239AC#4239AC

#4239AC is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.176 H 279.5°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#4239AC
RGB	rgb(66, 57, 172)
HSL	hsl(245, 50%, 45%)
HSV	hsv(245, 67%, 67%)
CMYK	cmyk(61.6%, 66.9%, 0%, 32.5%)
CIE-LAB	lab(31.95, 38.12, -60.33)
CIE-LCH	lch(31.95, 71.36, 302.29°)
OKLab	oklab(42.94% 0.029 -0.1738)
OKLCH	oklch(42.94% 0.176 279.5)
XYZ	xyz(11.1539, 7.0622, 39.7971)
Luminance	0.0706 (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

#4239AC #A3AC39

analogous

#3969AC #4239AC #7C39AC

triadic

#4239AC #AC4239 #39AC42

tetradic

#4239AC #AC3969 #A3AC39 #39AC7C

square

#4239AC #AC3969 #A3AC39 #39AC7C

split-complementary

#4239AC #AC7C39 #69AC39

monochromatic

#1F1B50 #302A7E #4239AC #635AC8 #8E88D8

Accessibility & contrast

On white

8.70

#4239AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#4239AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239AC

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239AC	#FFFFFF	#000000	##FFFFFF
##4239AC	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B0

Deuteranopia (green-blind)

#0047AA

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #4239ac;
/* rgb */ color: rgb(66, 57, 172);
/* oklch */ color: oklch(42.9% 0.176 279.5);

Tailwind

colors: {
  custom: {
    50: '#8270c6',
    500: '#4239ac',
    950: '#000000',
  },
}

SCSS

$custom: #4239ac;
$custom-light: #8270c6;
$custom-dark: #000000;

JSON

{
  "hex": "#4239ac",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 172
  },
  "hsl": {
    "h": 244.696,
    "s": 50.218,
    "l": 44.902
  },
  "oklch": {
    "l": 0.42939,
    "c": 0.17619,
    "h": 279.5
  },
  "luminance": 0.07063
}

Semantic roles & 50–950 ramp

primary

#4239AC

secondary

#BCC27F

accent

#DA4ECF

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4239AC

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

Preview Lab → · Contrast checker → · Palette generator →