#3756CF#3756CF

#3756CF is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.4% C 0.190 H 267.9°. Best body text is #FFFFFF at 6.19:1 contrast (WCAG AA passes).

Color values

HEX	#3756CF
RGB	rgb(55, 86, 207)
HSL	hsl(228, 61%, 51%)
HSV	hsv(228, 73%, 81%)
CMYK	cmyk(73.4%, 58.5%, 0%, 18.8%)
CIE-LAB	lab(41.17, 30.58, -65.83)
CIE-LCH	lch(41.17, 72.59, 294.92°)
OKLab	oklab(50.44% -0.007 -0.19)
OKLCH	oklch(50.44% 0.19 267.9)
XYZ	xyz(16.1619, 11.9711, 60.4783)
Luminance	0.1197 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3756CF #CFB037

analogous

#37A2CF #3756CF #6437CF

triadic

#3756CF #CF3756 #56CF37

tetradic

#3756CF #CF37A2 #CFB037 #37CF64

square

#3756CF #CF37A2 #CFB037 #37CF64

split-complementary

#3756CF #CF6437 #A2CF37

monochromatic

#1B2C71 #2740A2 #3756CF #6880DB #9AA9E7

Accessibility & contrast

On white

6.19

#3756CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#3756CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3756CF

6.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3756CF	#FFFFFF	#000000	##FFFFFF
##3756CF	1.00	6.19	3.39	6.19
#FFFFFF	6.19	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D3

Deuteranopia (green-blind)

#005ACD

Tritanopia (blue-blind)

#00748A

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3756cf;
/* rgb */ color: rgb(55, 86, 207);
/* oklch */ color: oklch(50.4% 0.190 267.9);

Tailwind

colors: {
  custom: {
    50: '#8385df',
    500: '#3756cf',
    950: '#000000',
  },
}

SCSS

$custom: #3756cf;
$custom-light: #8385df;
$custom-dark: #000000;

JSON

{
  "hex": "#3756cf",
  "rgb": {
    "r": 55,
    "g": 86,
    "b": 207
  },
  "hsl": {
    "h": 227.763,
    "s": 61.29,
    "l": 51.373
  },
  "oklch": {
    "l": 0.50445,
    "c": 0.19013,
    "h": 267.9
  },
  "luminance": 0.11973
}

Semantic roles & 50–950 ramp

primary

#3756CF

secondary

#D2C58F

accent

#C443E4

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3756CF

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

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