#3759C7#3759C7

#3759C7 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.4% C 0.176 H 266.9°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#3759C7
RGB	rgb(55, 89, 199)
HSL	hsl(226, 57%, 50%)
HSV	hsv(226, 72%, 78%)
CMYK	cmyk(72.4%, 55.3%, 0%, 22%)
CIE-LAB	lab(41.34, 25.73, -60.94)
CIE-LCH	lch(41.34, 66.15, 292.90°)
OKLab	oklab(50.38% -0.0096 -0.1756)
OKLCH	oklch(50.38% 0.176 266.9)
XYZ	xyz(15.4531, 12.0789, 55.5388)
Luminance	0.1208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3759C7 #C7A537

analogous

#37A1C7 #3759C7 #5D37C7

triadic

#3759C7 #C73759 #59C737

tetradic

#3759C7 #C737A1 #C7A537 #37C75D

square

#3759C7 #C737A1 #C7A537 #37C75D

split-complementary

#3759C7 #C75D37 #A1C737

monochromatic

#1C2E67 #2A4497 #3759C7 #6680D5 #96A8E2

Accessibility & contrast

On white

6.15

#3759C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#3759C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3759C7

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3759C7	#FFFFFF	#000000	##FFFFFF
##3759C7	1.00	6.15	3.42	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CB

Deuteranopia (green-blind)

#005BC5

Tritanopia (blue-blind)

#007487

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3759c7;
/* rgb */ color: rgb(55, 89, 199);
/* oklch */ color: oklch(50.4% 0.176 266.9);

Tailwind

colors: {
  custom: {
    50: '#8187d9',
    500: '#3759c7',
    950: '#000000',
  },
}

SCSS

$custom: #3759c7;
$custom-light: #8187d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3759c7",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 199
  },
  "hsl": {
    "h": 225.833,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.50384,
    "c": 0.17583,
    "h": 266.9
  },
  "luminance": 0.12081
}

Semantic roles & 50–950 ramp

primary

#3759C7

secondary

#CDBE8C

accent

#BC48E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3759C7

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

Preview Lab → · Contrast checker → · Palette generator →