#3758BE#3758BE

#3758BE is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.5% C 0.165 H 266.7°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#3758BE
RGB	rgb(55, 88, 190)
HSL	hsl(225, 55%, 48%)
HSV	hsv(225, 71%, 75%)
CMYK	cmyk(71.1%, 53.7%, 0%, 25.5%)
CIE-LAB	lab(40.42, 23.08, -57.19)
CIE-LCH	lch(40.42, 61.67, 291.97°)
OKLab	oklab(49.49% -0.0094 -0.1646)
OKLCH	oklch(49.49% 0.165 266.7)
XYZ	xyz(14.3563, 11.5079, 50.1699)
Luminance	0.1151 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758BE #BE9D37

analogous

#379CBE #3758BE #5937BE

triadic

#3758BE #BE3758 #58BE37

tetradic

#3758BE #BE379C #BE9D37 #37BE59

square

#3758BE #BE379C #BE9D37 #37BE59

split-complementary

#3758BE #BE5937 #9CBE37

monochromatic

#1C2C5F #29428F #3758BE #617CD1 #90A4DF

Accessibility & contrast

On white

6.36

#3758BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#3758BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758BE

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758BE	#FFFFFF	#000000	##FFFFFF
##3758BE	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A66C2

Deuteranopia (green-blind)

#0059BC

Tritanopia (blue-blind)

#007182

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3758be;
/* rgb */ color: rgb(55, 88, 190);
/* oklch */ color: oklch(49.5% 0.165 266.7);

Tailwind

colors: {
  custom: {
    50: '#7f86d2',
    500: '#3758be',
    950: '#000000',
  },
}

SCSS

$custom: #3758be;
$custom-light: #7f86d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3758be",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 190
  },
  "hsl": {
    "h": 225.333,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.49485,
    "c": 0.16485,
    "h": 266.7
  },
  "luminance": 0.11509
}

Semantic roles & 50–950 ramp

primary

#3758BE

secondary

#CAB987

accent

#BA49DE

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3758BE

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

Preview Lab → · Contrast checker → · Palette generator →