#3744BB#3744BB

#3744BB is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.4% C 0.185 H 271.9°. Best body text is #FFFFFF at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#3744BB
RGB	rgb(55, 68, 187)
HSL	hsl(234, 55%, 47%)
HSV	hsv(234, 71%, 73%)
CMYK	cmyk(70.6%, 63.6%, 0%, 26.7%)
CIE-LAB	lab(35.07, 34.88, -64.15)
CIE-LCH	lch(35.07, 73.02, 298.54°)
OKLab	oklab(45.42% 0.006 -0.1852)
OKLCH	oklch(45.42% 0.185 271.9)
XYZ	xyz(12.6093, 8.5331, 47.9866)
Luminance	0.0853 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3744BB #BBAE37

analogous

#3786BB #3744BB #6C37BB

triadic

#3744BB #BB3744 #44BB37

tetradic

#3744BB #BB3786 #BBAE37 #37BB6C

square

#3744BB #BB3786 #BBAE37 #37BB6C

split-complementary

#3744BB #BB6C37 #86BB37

monochromatic

#1B225C #29338C #3744BB #5F6AD0 #8E96DE

Accessibility & contrast

On white

7.76

#3744BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#3744BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3744BB

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3744BB	#FFFFFF	#000000	##FFFFFF
##3744BB	1.00	7.76	2.71	7.76
#FFFFFF	7.76	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BF

Deuteranopia (green-blind)

#004CB9

Tritanopia (blue-blind)

#006379

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3744bb;
/* rgb */ color: rgb(55, 68, 187);
/* oklch */ color: oklch(45.4% 0.185 271.9);

Tailwind

colors: {
  custom: {
    50: '#8078d0',
    500: '#3744bb',
    950: '#000000',
  },
}

SCSS

$custom: #3744bb;
$custom-light: #8078d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3744bb",
  "rgb": {
    "r": 55,
    "g": 68,
    "b": 187
  },
  "hsl": {
    "h": 234.091,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.45422,
    "c": 0.18535,
    "h": 271.9
  },
  "luminance": 0.08534
}

Semantic roles & 50–950 ramp

primary

#3744BB

secondary

#C9C285

accent

#CF4ADE

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3744BB

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

Preview Lab → · Contrast checker → · Palette generator →