#3756B4#3756B4

#3756B4 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.3% C 0.154 H 266.8°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#3756B4
RGB	rgb(55, 86, 180)
HSL	hsl(225, 53%, 46%)
HSV	hsv(225, 69%, 71%)
CMYK	cmyk(69.4%, 52.2%, 0%, 29.4%)
CIE-LAB	lab(39.18, 20.70, -53.35)
CIE-LCH	lch(39.18, 57.23, 291.20°)
OKLab	oklab(48.32% -0.0085 -0.1533)
OKLCH	oklch(48.32% 0.154 266.8)
XYZ	xyz(13.1387, 10.7618, 44.5560)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3756B4 #B49537

analogous

#3794B4 #3756B4 #5637B4

triadic

#3756B4 #B43756 #56B437

tetradic

#3756B4 #B43794 #B49537 #37B456

square

#3756B4 #B43794 #B49537 #37B456

split-complementary

#3756B4 #B45637 #94B437

monochromatic

#1A2956 #294085 #3756B4 #5B77CD #8A9EDB

Accessibility & contrast

On white

6.66

#3756B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3756B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3756B4

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3756B4	#FFFFFF	#000000	##FFFFFF
##3756B4	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A62B7

Deuteranopia (green-blind)

#0057B2

Tritanopia (blue-blind)

#006C7C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3756b4;
/* rgb */ color: rgb(55, 86, 180);
/* oklch */ color: oklch(48.3% 0.154 266.8);

Tailwind

colors: {
  custom: {
    50: '#7d85cb',
    500: '#3756b4',
    950: '#000000',
  },
}

SCSS

$custom: #3756b4;
$custom-light: #7d85cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3756b4",
  "rgb": {
    "r": 55,
    "g": 86,
    "b": 180
  },
  "hsl": {
    "h": 225.12,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.48318,
    "c": 0.15354,
    "h": 266.8
  },
  "luminance": 0.10763
}

Semantic roles & 50–950 ramp

primary

#3756B4

secondary

#C6B581

accent

#B94BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3756B4

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

Preview Lab → · Contrast checker → · Palette generator →