#4739B5#4739B5

#4739B5 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.1% C 0.187 H 280.6°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#4739B5
RGB	rgb(71, 57, 181)
HSL	hsl(247, 52%, 47%)
HSV	hsv(247, 69%, 71%)
CMYK	cmyk(60.8%, 68.5%, 0%, 29%)
CIE-LAB	lab(33.14, 41.78, -63.72)
CIE-LCH	lch(33.14, 76.20, 303.25°)
OKLab	oklab(44.14% 0.0344 -0.1836)
OKLCH	oklch(44.14% 0.187 280.6)
XYZ	xyz(12.3995, 7.6012, 44.5209)
Luminance	0.0760 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.53

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4739B5 #A7B539

analogous

#3969B5 #4739B5 #8539B5

triadic

#4739B5 #B54739 #39B547

tetradic

#4739B5 #B53969 #A7B539 #39B585

square

#4739B5 #B53969 #A7B539 #39B585

split-complementary

#4739B5 #B58539 #69B539

monochromatic

#221C58 #352A86 #4739B5 #6B5FCD #968DDB

Accessibility & contrast

On white

8.33

#4739B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#4739B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4739B5

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4739B5	#FFFFFF	#000000	##FFFFFF
##4739B5	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B9

Deuteranopia (green-blind)

#0049B3

Tritanopia (blue-blind)

#005A72

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4739b5;
/* rgb */ color: rgb(71, 57, 181);
/* oklch */ color: oklch(44.1% 0.187 280.6);

Tailwind

colors: {
  custom: {
    50: '#8771cc',
    500: '#4739b5',
    950: '#000000',
  },
}

SCSS

$custom: #4739b5;
$custom-light: #8771cc;
$custom-dark: #000000;

JSON

{
  "hex": "#4739b5",
  "rgb": {
    "r": 71,
    "g": 57,
    "b": 181
  },
  "hsl": {
    "h": 246.774,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.44142,
    "c": 0.1868,
    "h": 280.6
  },
  "luminance": 0.07602
}

Semantic roles & 50–950 ramp

primary

#4739B5

secondary

#BEC684

accent

#DC4CCB

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #4739B5

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

Preview Lab → · Contrast checker → · Palette generator →