#3759BF#3759BF

#3759BF is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.8% C 0.165 H 266.5°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#3759BF
RGB	rgb(55, 89, 191)
HSL	hsl(225, 55%, 48%)
HSV	hsv(225, 71%, 75%)
CMYK	cmyk(71.2%, 53.4%, 0%, 25.1%)
CIE-LAB	lab(40.76, 22.80, -57.23)
CIE-LCH	lch(40.76, 61.60, 291.72°)
OKLab	oklab(49.76% -0.0101 -0.1647)
OKLCH	oklch(49.76% 0.165 266.5)
XYZ	xyz(14.5486, 11.7171, 50.7750)
Luminance	0.1172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3759BF #BF9D37

analogous

#379DBF #3759BF #5937BF

triadic

#3759BF #BF3759 #59BF37

tetradic

#3759BF #BF379D #BF9D37 #37BF59

square

#3759BF #BF379D #BF9D37 #37BF59

split-complementary

#3759BF #BF5937 #9DBF37

monochromatic

#1C2D60 #29438F #3759BF #627ED2 #91A5DF

Accessibility & contrast

On white

6.28

#3759BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#3759BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3759BF

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3759BF	#FFFFFF	#000000	##FFFFFF
##3759BF	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E67C3

Deuteranopia (green-blind)

#005ABD

Tritanopia (blue-blind)

#007283

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3759bf;
/* rgb */ color: rgb(55, 89, 191);
/* oklch */ color: oklch(49.8% 0.165 266.5);

Tailwind

colors: {
  custom: {
    50: '#7f87d3',
    500: '#3759bf',
    950: '#000000',
  },
}

SCSS

$custom: #3759bf;
$custom-light: #7f87d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3759bf",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 191
  },
  "hsl": {
    "h": 225,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.49764,
    "c": 0.16497,
    "h": 266.5
  },
  "luminance": 0.11719
}

Semantic roles & 50–950 ramp

primary

#3759BF

secondary

#CABA88

accent

#B949DF

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3759BF

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

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