#4243AA#4243AA

#4243AA is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.5% C 0.161 H 277.2°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#4243AA
RGB	rgb(66, 67, 170)
HSL	hsl(239, 44%, 46%)
HSV	hsv(239, 61%, 67%)
CMYK	cmyk(61.2%, 60.6%, 0%, 33.3%)
CIE-LAB	lab(34.14, 31.25, -55.56)
CIE-LCH	lch(34.14, 63.75, 299.35°)
OKLab	oklab(44.49% 0.0202 -0.1598)
OKLCH	oklch(44.49% 0.161 277.2)
XYZ	xyz(11.5073, 8.0740, 38.9745)
Luminance	0.0808 (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

#4243AA #AAA942

analogous

#4277AA #4243AA #7542AA

triadic

#4243AA #AA4243 #43AA42

tetradic

#4243AA #AA4277 #AAA942 #42AA75

square

#4243AA #AA4277 #AAA942 #42AA75

split-complementary

#4243AA #AA7542 #77AA42

monochromatic

#202052 #31327E #4243AA #6667C3 #9292D5

Accessibility & contrast

On white

8.03

#4243AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#4243AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4243AA

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4243AA	#FFFFFF	#000000	##FFFFFF
##4243AA	1.00	8.03	2.62	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055AD

Deuteranopia (green-blind)

#004CA8

Tritanopia (blue-blind)

#005C70

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #4243aa;
/* rgb */ color: rgb(66, 67, 170);
/* oklch */ color: oklch(44.5% 0.161 277.2);

Tailwind

colors: {
  custom: {
    50: '#8177c4',
    500: '#4243aa',
    950: '#000000',
  },
}

SCSS

$custom: #4243aa;
$custom-light: #8177c4;
$custom-dark: #000000;

JSON

{
  "hex": "#4243aa",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 170
  },
  "hsl": {
    "h": 239.423,
    "s": 44.068,
    "l": 46.275
  },
  "oklch": {
    "l": 0.44487,
    "c": 0.16103,
    "h": 277.2
  },
  "luminance": 0.08075
}

Semantic roles & 50–950 ramp

primary

#4243AA

secondary

#C0BF88

accent

#D354D4

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #4243AA

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

Preview Lab → · Contrast checker → · Palette generator →