#4239AA#4239AA

#4239AA is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.8% C 0.174 H 279.7°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#4239AA
RGB	rgb(66, 57, 170)
HSL	hsl(245, 50%, 45%)
HSV	hsv(245, 66%, 67%)
CMYK	cmyk(61.2%, 66.5%, 0%, 33.3%)
CIE-LAB	lab(31.77, 37.46, -59.41)
CIE-LCH	lch(31.77, 70.24, 302.23°)
OKLab	oklab(42.76% 0.0292 -0.1711)
OKLCH	oklch(42.76% 0.174 279.7)
XYZ	xyz(10.9633, 6.9860, 38.7931)
Luminance	0.0699 (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

#4239AA #A1AA39

analogous

#3968AA #4239AA #7B39AA

triadic

#4239AA #AA4239 #39AA42

tetradic

#4239AA #AA3968 #A1AA39 #39AA7B

square

#4239AA #AA3968 #A1AA39 #39AA7B

split-complementary

#4239AA #AA7B39 #68AA39

monochromatic

#1E1A4E #302A7C #4239AA #6259C7 #8D87D7

Accessibility & contrast

On white

8.76

#4239AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#4239AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239AA

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239AA	#FFFFFF	#000000	##FFFFFF
##4239AA	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAE

Deuteranopia (green-blind)

#0046A8

Tritanopia (blue-blind)

#00566C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #4239aa;
/* rgb */ color: rgb(66, 57, 170);
/* oklch */ color: oklch(42.8% 0.174 279.7);

Tailwind

colors: {
  custom: {
    50: '#8270c4',
    500: '#4239aa',
    950: '#000000',
  },
}

SCSS

$custom: #4239aa;
$custom-light: #8270c4;
$custom-dark: #000000;

JSON

{
  "hex": "#4239aa",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 170
  },
  "hsl": {
    "h": 244.779,
    "s": 49.78,
    "l": 44.51
  },
  "oklch": {
    "l": 0.4276,
    "c": 0.17359,
    "h": 279.7
  },
  "luminance": 0.06987
}

Semantic roles & 50–950 ramp

primary

#4239AA

secondary

#BBC17E

accent

#D94ECE

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4239AA

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

Preview Lab → · Contrast checker → · Palette generator →