#3758CE#3758CE

#3758CE is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.7% C 0.186 H 267.4°. Best body text is #FFFFFF at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#3758CE
RGB	rgb(55, 88, 206)
HSL	hsl(227, 61%, 51%)
HSV	hsv(227, 73%, 81%)
CMYK	cmyk(73.3%, 57.3%, 0%, 19.2%)
CIE-LAB	lab(41.60, 28.94, -64.55)
CIE-LCH	lch(41.60, 70.74, 294.15°)
OKLab	oklab(50.75% -0.0085 -0.1862)
OKLCH	oklch(50.75% 0.186 267.4)
XYZ	xyz(16.2020, 12.2462, 59.8904)
Luminance	0.1225 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758CE #CEAD37

analogous

#37A4CE #3758CE #6137CE

triadic

#3758CE #CE3758 #58CE37

tetradic

#3758CE #CE37A4 #CEAD37 #37CE61

square

#3758CE #CE37A4 #CEAD37 #37CE61

split-complementary

#3758CE #CE6137 #A4CE37

monochromatic

#1B2E6F #2742A0 #3758CE #6881DA #99AAE6

Accessibility & contrast

On white

6.09

#3758CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#3758CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758CE

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758CE	#FFFFFF	#000000	##FFFFFF
##3758CE	1.00	6.09	3.45	6.09
#FFFFFF	6.09	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D2

Deuteranopia (green-blind)

#005BCC

Tritanopia (blue-blind)

#00758A

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3758ce;
/* rgb */ color: rgb(55, 88, 206);
/* oklch */ color: oklch(50.7% 0.186 267.4);

Tailwind

colors: {
  custom: {
    50: '#8286de',
    500: '#3758ce',
    950: '#000000',
  },
}

SCSS

$custom: #3758ce;
$custom-light: #8286de;
$custom-dark: #000000;

JSON

{
  "hex": "#3758ce",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 206
  },
  "hsl": {
    "h": 226.887,
    "s": 60.643,
    "l": 51.176
  },
  "oklch": {
    "l": 0.50746,
    "c": 0.1864,
    "h": 267.4
  },
  "luminance": 0.12248
}

Semantic roles & 50–950 ramp

primary

#3758CE

secondary

#D2C38F

accent

#C144E4

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3758CE

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

Preview Lab → · Contrast checker → · Palette generator →