#3734B9#3734B9

#3734B9 is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.6% C 0.201 H 274.7°. Best body text is #FFFFFF at 8.92:1 contrast (WCAG AA passes).

Color values

HEX	#3734B9
RGB	rgb(55, 52, 185)
HSL	hsl(241, 56%, 46%)
HSV	hsv(241, 72%, 73%)
CMYK	cmyk(70.3%, 71.9%, 0%, 27.5%)
CIE-LAB	lab(31.28, 43.93, -69.19)
CIE-LCH	lch(31.28, 81.96, 302.41°)
OKLab	oklab(42.62% 0.0166 -0.2)
OKLCH	oklch(42.62% 0.201 274.7)
XYZ	xyz(11.5576, 6.7699, 46.5872)
Luminance	0.0677 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.61

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3734B9 #B6B934

analogous

#3474B9 #3734B9 #7A34B9

triadic

#3734B9 #B93734 #34B937

tetradic

#3734B9 #B93474 #B6B934 #34B97A

square

#3734B9 #B93474 #B6B934 #34B97A

split-complementary

#3734B9 #B97A34 #74B934

monochromatic

#1B1959 #292789 #3734B9 #5C5AD1 #8B89DE

Accessibility & contrast

On white

8.92

#3734B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#3734B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3734B9

8.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3734B9	#FFFFFF	#000000	##FFFFFF
##3734B9	1.00	8.92	2.35	8.92
#FFFFFF	8.92	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050BD

Deuteranopia (green-blind)

#0043B7

Tritanopia (blue-blind)

#005973

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3734b9;
/* rgb */ color: rgb(55, 52, 185);
/* oklch */ color: oklch(42.6% 0.201 274.7);

Tailwind

colors: {
  custom: {
    50: '#806dcf',
    500: '#3734b9',
    950: '#000000',
  },
}

SCSS

$custom: #3734b9;
$custom-light: #806dcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3734b9",
  "rgb": {
    "r": 55,
    "g": 52,
    "b": 185
  },
  "hsl": {
    "h": 241.353,
    "s": 56.118,
    "l": 46.471
  },
  "oklch": {
    "l": 0.42618,
    "c": 0.20072,
    "h": 274.7
  },
  "luminance": 0.06771
}

Semantic roles & 50–950 ramp

primary

#3734B9

secondary

#C6C881

accent

#DF48DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3734B9

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

Preview Lab → · Contrast checker → · Palette generator →