#3758BF#3758BF

#3758BF is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.6% C 0.166 H 266.8°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#3758BF
RGB	rgb(55, 88, 191)
HSL	hsl(225, 55%, 48%)
HSV	hsv(225, 71%, 75%)
CMYK	cmyk(71.2%, 53.9%, 0%, 25.1%)
CIE-LAB	lab(40.49, 23.44, -57.66)
CIE-LCH	lch(40.49, 62.24, 292.13°)
OKLab	oklab(49.56% -0.0093 -0.1659)
OKLCH	oklch(49.56% 0.166 266.8)
XYZ	xyz(14.4660, 11.5518, 50.7474)
Luminance	0.1155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758BF #BF9E37

analogous

#379CBF #3758BF #5A37BF

triadic

#3758BF #BF3758 #58BF37

tetradic

#3758BF #BF379C #BF9E37 #37BF5A

square

#3758BF #BF379C #BF9E37 #37BF5A

split-complementary

#3758BF #BF5A37 #9CBF37

monochromatic

#1C2C60 #29428F #3758BF #627DD2 #91A4DF

Accessibility & contrast

On white

6.34

#3758BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#3758BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758BF

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758BF	#FFFFFF	#000000	##FFFFFF
##3758BF	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0666C3

Deuteranopia (green-blind)

#0059BD

Tritanopia (blue-blind)

#007183

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3758bf;
/* rgb */ color: rgb(55, 88, 191);
/* oklch */ color: oklch(49.6% 0.166 266.8);

Tailwind

colors: {
  custom: {
    50: '#7f86d3',
    500: '#3758bf',
    950: '#000000',
  },
}

SCSS

$custom: #3758bf;
$custom-light: #7f86d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3758bf",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 191
  },
  "hsl": {
    "h": 225.441,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.49562,
    "c": 0.16621,
    "h": 266.8
  },
  "luminance": 0.11553
}

Semantic roles & 50–950 ramp

primary

#3758BF

secondary

#CABA88

accent

#BA49DF

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3758BF

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

Preview Lab → · Contrast checker → · Palette generator →