#3734BE#3734BE

#3734BE is a dark, highly saturated blue. Relative luminance 0.070; OKLCH L 43.1% C 0.207 H 274.4°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#3734BE
RGB	rgb(55, 52, 190)
HSL	hsl(241, 57%, 47%)
HSV	hsv(241, 73%, 75%)
CMYK	cmyk(71.1%, 72.6%, 0%, 25.5%)
CIE-LAB	lab(31.77, 45.58, -71.33)
CIE-LCH	lch(31.77, 84.65, 302.58°)
OKLab	oklab(43.12% 0.0157 -0.2063)
OKLCH	oklch(43.12% 0.207 274.4)
XYZ	xyz(12.0947, 6.9847, 49.4160)
Luminance	0.0699 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 4.06

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3734BE #BBBE34

analogous

#3476BE #3734BE #7C34BE

triadic

#3734BE #BE3734 #34BE37

tetradic

#3734BE #BE3476 #BBBE34 #34BE7C

square

#3734BE #BE3476 #BBBE34 #34BE7C

split-complementary

#3734BE #BE7C34 #76BE34

monochromatic

#1B1A5E #29278E #3734BE #5F5DD3 #8E8DE0

Accessibility & contrast

On white

8.76

#3734BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#3734BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3734BE

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3734BE	#FFFFFF	#000000	##FFFFFF
##3734BE	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051C2

Deuteranopia (green-blind)

#0044BC

Tritanopia (blue-blind)

#005B76

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3734be;
/* rgb */ color: rgb(55, 52, 190);
/* oklch */ color: oklch(43.1% 0.207 274.4);

Tailwind

colors: {
  custom: {
    50: '#826dd3',
    500: '#3734be',
    950: '#000000',
  },
}

SCSS

$custom: #3734be;
$custom-light: #826dd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3734be",
  "rgb": {
    "r": 55,
    "g": 52,
    "b": 190
  },
  "hsl": {
    "h": 241.304,
    "s": 57.025,
    "l": 47.451
  },
  "oklch": {
    "l": 0.4312,
    "c": 0.20687,
    "h": 274.4
  },
  "luminance": 0.06986
}

Semantic roles & 50–950 ramp

primary

#3734BE

secondary

#C9CA84

accent

#E048DD

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3734BE

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

Preview Lab → · Contrast checker → · Palette generator →