#3754B9#3754B9

#3754B9 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.3% C 0.163 H 267.7°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3754B9
RGB	rgb(55, 84, 185)
HSL	hsl(227, 54%, 47%)
HSV	hsv(227, 70%, 73%)
CMYK	cmyk(70.3%, 54.6%, 0%, 27.5%)
CIE-LAB	lab(38.99, 23.84, -56.59)
CIE-LCH	lch(38.99, 61.40, 292.85°)
OKLab	oklab(48.29% -0.0064 -0.1628)
OKLCH	oklch(48.29% 0.163 267.7)
XYZ	xyz(13.4998, 10.6543, 47.2346)
Luminance	0.1066 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3754B9 #B99C37

analogous

#3795B9 #3754B9 #5B37B9

triadic

#3754B9 #B93754 #54B937

tetradic

#3754B9 #B93795 #B99C37 #37B95B

square

#3754B9 #B93795 #B99C37 #37B95B

split-complementary

#3754B9 #B95B37 #95B937

monochromatic

#1B295B #293F8A #3754B9 #5E77CF #8D9FDD

Accessibility & contrast

On white

6.71

#3754B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3754B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3754B9

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3754B9	#FFFFFF	#000000	##FFFFFF
##3754B9	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062BD

Deuteranopia (green-blind)

#0056B7

Tritanopia (blue-blind)

#006C7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3754b9;
/* rgb */ color: rgb(55, 84, 185);
/* oklch */ color: oklch(48.3% 0.163 267.7);

Tailwind

colors: {
  custom: {
    50: '#7e83cf',
    500: '#3754b9',
    950: '#000000',
  },
}

SCSS

$custom: #3754b9;
$custom-light: #7e83cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3754b9",
  "rgb": {
    "r": 55,
    "g": 84,
    "b": 185
  },
  "hsl": {
    "h": 226.615,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.48291,
    "c": 0.16298,
    "h": 267.7
  },
  "luminance": 0.10656
}

Semantic roles & 50–950 ramp

primary

#3754B9

secondary

#C8B984

accent

#BD4ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3754B9

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

Preview Lab → · Contrast checker → · Palette generator →