#3754BB#3754BB

#3754BB is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.4% C 0.166 H 267.8°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#3754BB
RGB	rgb(55, 84, 187)
HSL	hsl(227, 55%, 47%)
HSV	hsv(227, 71%, 73%)
CMYK	cmyk(70.6%, 55.1%, 0%, 26.7%)
CIE-LAB	lab(39.14, 24.57, -57.52)
CIE-LCH	lch(39.14, 62.55, 293.13°)
OKLab	oklab(48.45% -0.0063 -0.1656)
OKLCH	oklch(48.45% 0.166 267.8)
XYZ	xyz(13.7124, 10.7393, 48.3543)
Luminance	0.1074 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3754BB #BB9E37

analogous

#3796BB #3754BB #5C37BB

triadic

#3754BB #BB3754 #54BB37

tetradic

#3754BB #BB3796 #BB9E37 #37BB5C

square

#3754BB #BB3796 #BB9E37 #37BB5C

split-complementary

#3754BB #BB5C37 #96BB37

monochromatic

#1B2A5C #293F8C #3754BB #5F78D0 #8EA0DE

Accessibility & contrast

On white

6.67

#3754BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3754BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3754BB

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3754BB	#FFFFFF	#000000	##FFFFFF
##3754BB	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062BF

Deuteranopia (green-blind)

#0056B9

Tritanopia (blue-blind)

#006D7F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3754bb;
/* rgb */ color: rgb(55, 84, 187);
/* oklch */ color: oklch(48.4% 0.166 267.8);

Tailwind

colors: {
  custom: {
    50: '#7e83d0',
    500: '#3754bb',
    950: '#000000',
  },
}

SCSS

$custom: #3754bb;
$custom-light: #7e83d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3754bb",
  "rgb": {
    "r": 55,
    "g": 84,
    "b": 187
  },
  "hsl": {
    "h": 226.818,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.48448,
    "c": 0.16573,
    "h": 267.8
  },
  "luminance": 0.10741
}

Semantic roles & 50–950 ramp

primary

#3754BB

secondary

#C9BA85

accent

#BD4ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3754BB

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

Preview Lab → · Contrast checker → · Palette generator →