#3759BA#3759BA

#3759BA is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.4% C 0.158 H 266.2°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#3759BA
RGB	rgb(55, 89, 186)
HSL	hsl(224, 54%, 47%)
HSV	hsv(224, 70%, 73%)
CMYK	cmyk(70.4%, 52.2%, 0%, 27.1%)
CIE-LAB	lab(40.41, 20.96, -54.88)
CIE-LCH	lch(40.41, 58.74, 290.90°)
OKLab	oklab(49.39% -0.0106 -0.1577)
OKLCH	oklch(49.39% 0.158 266.2)
XYZ	xyz(14.0078, 11.5007, 47.9265)
Luminance	0.1150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3759BA #BA9837

analogous

#379BBA #3759BA #5637BA

triadic

#3759BA #BA3759 #59BA37

tetradic

#3759BA #BA379B #BA9837 #37BA56

square

#3759BA #BA379B #BA9837 #37BA56

split-complementary

#3759BA #BA5637 #9BBA37

monochromatic

#1B2C5C #29428B #3759BA #5F7CD0 #8EA3DE

Accessibility & contrast

On white

6.36

#3759BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#3759BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3759BA

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3759BA	#FFFFFF	#000000	##FFFFFF
##3759BA	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A66BD

Deuteranopia (green-blind)

#005AB8

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3759ba;
/* rgb */ color: rgb(55, 89, 186);
/* oklch */ color: oklch(49.4% 0.158 266.2);

Tailwind

colors: {
  custom: {
    50: '#7e87cf',
    500: '#3759ba',
    950: '#000000',
  },
}

SCSS

$custom: #3759ba;
$custom-light: #7e87cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3759ba",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 186
  },
  "hsl": {
    "h": 224.427,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.49387,
    "c": 0.15809,
    "h": 266.2
  },
  "luminance": 0.11502
}

Semantic roles & 50–950 ramp

primary

#3759BA

secondary

#C8B785

accent

#B74ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3759BA

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

Preview Lab → · Contrast checker → · Palette generator →