#3756CC#3756CC

#3756CC is a mid, vivid blue. Relative luminance 0.118; OKLCH L 50.2% C 0.186 H 267.8°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#3756CC
RGB	rgb(55, 86, 204)
HSL	hsl(228, 59%, 51%)
HSV	hsv(228, 73%, 80%)
CMYK	cmyk(73%, 57.8%, 0%, 20%)
CIE-LAB	lab(40.94, 29.49, -64.48)
CIE-LCH	lch(40.94, 70.91, 294.58°)
OKLab	oklab(50.2% -0.0071 -0.186)
OKLCH	oklch(50.2% 0.186 267.8)
XYZ	xyz(15.7986, 11.8258, 58.5650)
Luminance	0.1183 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3756CC #CCAD37

analogous

#37A0CC #3756CC #6237CC

triadic

#3756CC #CC3756 #56CC37

tetradic

#3756CC #CC37A0 #CCAD37 #37CC62

square

#3756CC #CC37A0 #CCAD37 #37CC62

split-complementary

#3756CC #CC6237 #A0CC37

monochromatic

#1C2D6D #28419E #3756CC #687FD8 #99A8E5

Accessibility & contrast

On white

6.24

#3756CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#3756CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3756CC

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3756CC	#FFFFFF	#000000	##FFFFFF
##3756CC	1.00	6.24	3.37	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D0

Deuteranopia (green-blind)

#005ACA

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3756cc;
/* rgb */ color: rgb(55, 86, 204);
/* oklch */ color: oklch(50.2% 0.186 267.8);

Tailwind

colors: {
  custom: {
    50: '#8285dc',
    500: '#3756cc',
    950: '#000000',
  },
}

SCSS

$custom: #3756cc;
$custom-light: #8285dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3756cc",
  "rgb": {
    "r": 55,
    "g": 86,
    "b": 204
  },
  "hsl": {
    "h": 227.517,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.50199,
    "c": 0.18617,
    "h": 267.8
  },
  "luminance": 0.11827
}

Semantic roles & 50–950 ramp

primary

#3756CC

secondary

#D0C38E

accent

#C245E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3756CC

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

Preview Lab → · Contrast checker → · Palette generator →