#4737B3#4737B3

#4737B3 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.7% C 0.187 H 281.2°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#4737B3
RGB	rgb(71, 55, 179)
HSL	hsl(248, 53%, 46%)
HSV	hsv(248, 69%, 70%)
CMYK	cmyk(60.3%, 69.3%, 0%, 29.8%)
CIE-LAB	lab(32.54, 42.31, -63.52)
CIE-LCH	lch(32.54, 76.32, 303.67°)
OKLab	oklab(43.66% 0.0363 -0.183)
OKLCH	oklch(43.66% 0.187 281.2)
XYZ	xyz(12.0989, 7.3258, 43.4155)
Luminance	0.0733 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 3.01

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4737B3 #A3B337

analogous

#3765B3 #4737B3 #8537B3

triadic

#4737B3 #B34737 #37B347

tetradic

#4737B3 #B33765 #A3B337 #37B385

square

#4737B3 #B33765 #A3B337 #37B385

split-complementary

#4737B3 #B38537 #65B337

monochromatic

#221A55 #342984 #4737B3 #695BCD #948ADB

Accessibility & contrast

On white

8.52

#4737B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#4737B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4737B3

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4737B3	#FFFFFF	#000000	##FFFFFF
##4737B3	1.00	8.52	2.47	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B7

Deuteranopia (green-blind)

#0048B1

Tritanopia (blue-blind)

#005871

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #4737b3;
/* rgb */ color: rgb(71, 55, 179);
/* oklch */ color: oklch(43.7% 0.187 281.2);

Tailwind

colors: {
  custom: {
    50: '#866fcb',
    500: '#4737b3',
    950: '#000000',
  },
}

SCSS

$custom: #4737b3;
$custom-light: #866fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#4737b3",
  "rgb": {
    "r": 71,
    "g": 55,
    "b": 179
  },
  "hsl": {
    "h": 247.742,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.43656,
    "c": 0.18658,
    "h": 281.2
  },
  "luminance": 0.07327
}

Semantic roles & 50–950 ramp

primary

#4737B3

secondary

#BCC581

accent

#DC4BCA

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4737B3

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

Preview Lab → · Contrast checker → · Palette generator →