#4739B7#4739B7

#4739B7 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.3% C 0.189 H 280.4°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#4739B7
RGB	rgb(71, 57, 183)
HSL	hsl(247, 53%, 47%)
HSV	hsv(247, 69%, 72%)
CMYK	cmyk(61.2%, 68.9%, 0%, 28.2%)
CIE-LAB	lab(33.32, 42.42, -64.62)
CIE-LCH	lch(33.32, 77.30, 303.28°)
OKLab	oklab(44.32% 0.0341 -0.1862)
OKLCH	oklch(44.32% 0.189 280.4)
XYZ	xyz(12.6062, 7.6838, 45.6094)
Luminance	0.0769 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.54

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4739B7 #A9B739

analogous

#396AB7 #4739B7 #8639B7

triadic

#4739B7 #B74739 #39B747

tetradic

#4739B7 #B7396A #A9B739 #39B786

square

#4739B7 #B7396A #A9B739 #39B786

split-complementary

#4739B7 #B78639 #6AB739

monochromatic

#231C5A #352A88 #4739B7 #6C60CD #978EDC

Accessibility & contrast

On white

8.28

#4739B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#4739B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4739B7

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4739B7	#FFFFFF	#000000	##FFFFFF
##4739B7	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BB

Deuteranopia (green-blind)

#004AB5

Tritanopia (blue-blind)

#005A73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4739b7;
/* rgb */ color: rgb(71, 57, 183);
/* oklch */ color: oklch(44.3% 0.189 280.4);

Tailwind

colors: {
  custom: {
    50: '#8771ce',
    500: '#4739b7',
    950: '#000000',
  },
}

SCSS

$custom: #4739b7;
$custom-light: #8771ce;
$custom-dark: #000000;

JSON

{
  "hex": "#4739b7",
  "rgb": {
    "r": 71,
    "g": 57,
    "b": 183
  },
  "hsl": {
    "h": 246.667,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.44324,
    "c": 0.18932,
    "h": 280.4
  },
  "luminance": 0.07685
}

Semantic roles & 50–950 ramp

primary

#4739B7

secondary

#BFC785

accent

#DC4CCC

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4739B7

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

Preview Lab → · Contrast checker → · Palette generator →