#3758A4#3758A4

#3758A4 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.6% C 0.128 H 264.4°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#3758A4
RGB	rgb(55, 88, 164)
HSL	hsl(222, 50%, 43%)
HSV	hsv(222, 66%, 64%)
CMYK	cmyk(66.5%, 46.3%, 0%, 35.7%)
CIE-LAB	lab(38.67, 13.51, -44.69)
CIE-LCH	lch(38.67, 46.68, 286.82°)
OKLab	oklab(47.6% -0.0125 -0.1278)
OKLCH	oklch(47.6% 0.128 264.4)
XYZ	xyz(11.7638, 10.4709, 36.5159)
Luminance	0.1047 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758A4 #A48337

analogous

#378EA4 #3758A4 #4C37A4

triadic

#3758A4 #A43758 #58A437

tetradic

#3758A4 #A4378E #A48337 #37A44C

square

#3758A4 #A4378E #A48337 #37A44C

split-complementary

#3758A4 #A44C37 #8EA437

monochromatic

#182748 #283F76 #3758A4 #5376C5 #819AD5

Accessibility & contrast

On white

6.79

#3758A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3758A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758A4

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758A4	#FFFFFF	#000000	##FFFFFF
##3758A4	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3260A7

Deuteranopia (green-blind)

#1F56A2

Tritanopia (blue-blind)

#006976

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3758a4;
/* rgb */ color: rgb(55, 88, 164);
/* oklch */ color: oklch(47.6% 0.128 264.4);

Tailwind

colors: {
  custom: {
    50: '#7a86bf',
    500: '#3758a4',
    950: '#000000',
  },
}

SCSS

$custom: #3758a4;
$custom-light: #7a86bf;
$custom-dark: #000000;

JSON

{
  "hex": "#3758a4",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 164
  },
  "hsl": {
    "h": 221.835,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.47596,
    "c": 0.12839,
    "h": 264.4
  },
  "luminance": 0.10472
}

Semantic roles & 50–950 ramp

primary

#3758A4

secondary

#BEA979

accent

#AF4FD9

background

#F7F8FB

surface

#EEEFF7

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #3758A4

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

Preview Lab → · Contrast checker → · Palette generator →