#3657BE#3657BE

#3657BE is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.2% C 0.166 H 266.7°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#3657BE
RGB	rgb(54, 87, 190)
HSL	hsl(225, 56%, 48%)
HSV	hsv(225, 72%, 75%)
CMYK	cmyk(71.6%, 54.2%, 0%, 25.5%)
CIE-LAB	lab(40.11, 23.59, -57.70)
CIE-LCH	lch(40.11, 62.34, 292.23°)
OKLab	oklab(49.24% -0.0094 -0.1661)
OKLCH	oklch(49.24% 0.166 266.7)
XYZ	xyz(14.2205, 11.3169, 50.1401)
Luminance	0.1132 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657BE #BE9D36

analogous

#369BBE #3657BE #5936BE

triadic

#3657BE #BE3657 #57BE36

tetradic

#3657BE #BE369B #BE9D36 #36BE59

square

#3657BE #BE369B #BE9D36 #36BE59

split-complementary

#3657BE #BE5936 #9BBE36

monochromatic

#1B2B5F #28418E #3657BE #607BD2 #8FA3DF

Accessibility & contrast

On white

6.43

#3657BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#3657BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657BE

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657BE	#FFFFFF	#000000	##FFFFFF
##3657BE	1.00	6.43	3.26	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0165C2

Deuteranopia (green-blind)

#0059BC

Tritanopia (blue-blind)

#007082

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3657be;
/* rgb */ color: rgb(54, 87, 190);
/* oklch */ color: oklch(49.2% 0.166 266.7);

Tailwind

colors: {
  custom: {
    50: '#7e85d2',
    500: '#3657be',
    950: '#000000',
  },
}

SCSS

$custom: #3657be;
$custom-light: #7e85d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3657be",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 190
  },
  "hsl": {
    "h": 225.441,
    "s": 55.738,
    "l": 47.843
  },
  "oklch": {
    "l": 0.49236,
    "c": 0.16638,
    "h": 266.7
  },
  "luminance": 0.11318
}

Semantic roles & 50–950 ramp

primary

#3657BE

secondary

#CAB986

accent

#BB49DF

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3657BE

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

Preview Lab → · Contrast checker → · Palette generator →