#4739BB#4739BB

#4739BB is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.7% C 0.194 H 279.9°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#4739BB
RGB	rgb(71, 57, 187)
HSL	hsl(246, 53%, 48%)
HSV	hsv(246, 70%, 73%)
CMYK	cmyk(62%, 69.5%, 0%, 26.7%)
CIE-LAB	lab(33.67, 43.69, -66.39)
CIE-LCH	lch(33.67, 79.48, 303.35°)
OKLab	oklab(44.69% 0.0334 -0.1914)
OKLCH	oklch(44.69% 0.194 279.9)
XYZ	xyz(13.0285, 7.8527, 47.8332)
Luminance	0.0785 (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

#4739BB #ADBB39

analogous

#396CBB #4739BB #8839BB

triadic

#4739BB #BB4739 #39BB47

tetradic

#4739BB #BB396C #ADBB39 #39BB88

square

#4739BB #BB396C #ADBB39 #39BB88

split-complementary

#4739BB #BB8839 #6CBB39

monochromatic

#231C5D #352B8C #4739BB #6E62CF #9991DD

Accessibility & contrast

On white

8.17

#4739BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#4739BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4739BB

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4739BB	#FFFFFF	#000000	##FFFFFF
##4739BB	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BF

Deuteranopia (green-blind)

#004AB9

Tritanopia (blue-blind)

#005C76

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4739bb;
/* rgb */ color: rgb(71, 57, 187);
/* oklch */ color: oklch(44.7% 0.194 279.9);

Tailwind

colors: {
  custom: {
    50: '#8871d1',
    500: '#4739bb',
    950: '#000000',
  },
}

SCSS

$custom: #4739bb;
$custom-light: #8871d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4739bb",
  "rgb": {
    "r": 71,
    "g": 57,
    "b": 187
  },
  "hsl": {
    "h": 246.462,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44691,
    "c": 0.19433,
    "h": 279.9
  },
  "luminance": 0.07854
}

Semantic roles & 50–950 ramp

primary

#4739BB

secondary

#C1C887

accent

#DD4BCD

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0D0814

muted

#7D7B83

Preview Lab

Preview with #4739BB

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

Preview Lab → · Contrast checker → · Palette generator →