#4739B2#4739B2

#4739B2 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.9% C 0.183 H 281.0°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#4739B2
RGB	rgb(71, 57, 178)
HSL	hsl(247, 51%, 46%)
HSV	hsv(247, 68%, 70%)
CMYK	cmyk(60.1%, 68%, 0%, 30.2%)
CIE-LAB	lab(32.87, 40.83, -62.37)
CIE-LCH	lch(32.87, 74.55, 303.21°)
OKLab	oklab(43.87% 0.0348 -0.1796)
OKLCH	oklch(43.87% 0.183 281)
XYZ	xyz(12.0950, 7.4794, 42.9172)
Luminance	0.0748 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.57

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4739B2 #A4B239

analogous

#3967B2 #4739B2 #8339B2

triadic

#4739B2 #B24739 #39B247

tetradic

#4739B2 #B23967 #A4B239 #39B283

square

#4739B2 #B23967 #A4B239 #39B283

split-complementary

#4739B2 #B28339 #67B239

monochromatic

#221B55 #352A84 #4739B2 #6A5DCB #958BDA

Accessibility & contrast

On white

8.41

#4739B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#4739B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4739B2

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4739B2	#FFFFFF	#000000	##FFFFFF
##4739B2	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B6

Deuteranopia (green-blind)

#0049B0

Tritanopia (blue-blind)

#005971

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #4739b2;
/* rgb */ color: rgb(71, 57, 178);
/* oklch */ color: oklch(43.9% 0.183 281.0);

Tailwind

colors: {
  custom: {
    50: '#8671ca',
    500: '#4739b2',
    950: '#000000',
  },
}

SCSS

$custom: #4739b2;
$custom-light: #8671ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4739b2",
  "rgb": {
    "r": 71,
    "g": 57,
    "b": 178
  },
  "hsl": {
    "h": 246.942,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.43871,
    "c": 0.18299,
    "h": 281
  },
  "luminance": 0.0748
}

Semantic roles & 50–950 ramp

primary

#4739B2

secondary

#BDC482

accent

#DB4DCB

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #4739B2

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

Preview Lab → · Contrast checker → · Palette generator →