#3657BD#3657BD

#3657BD is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.2% C 0.165 H 266.7°. Best body text is #FFFFFF at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#3657BD
RGB	rgb(54, 87, 189)
HSL	hsl(225, 56%, 48%)
HSV	hsv(225, 71%, 74%)
CMYK	cmyk(71.4%, 54%, 0%, 25.9%)
CIE-LAB	lab(40.04, 23.22, -57.24)
CIE-LCH	lch(40.04, 61.77, 292.08°)
OKLab	oklab(49.16% -0.0095 -0.1647)
OKLCH	oklch(49.16% 0.165 266.7)
XYZ	xyz(14.1116, 11.2733, 49.5665)
Luminance	0.1128 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657BD #BD9C36

analogous

#369BBD #3657BD #5836BD

triadic

#3657BD #BD3657 #57BD36

tetradic

#3657BD #BD369B #BD9C36 #36BD58

square

#3657BD #BD369B #BD9C36 #36BD58

split-complementary

#3657BD #BD5836 #9BBD36

monochromatic

#1B2B5E #28418D #3657BD #5F7BD1 #8FA2DF

Accessibility & contrast

On white

6.45

#3657BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#3657BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657BD

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657BD	#FFFFFF	#000000	##FFFFFF
##3657BD	1.00	6.45	3.26	6.45
#FFFFFF	6.45	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0665C1

Deuteranopia (green-blind)

#0058BB

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3657bd;
/* rgb */ color: rgb(54, 87, 189);
/* oklch */ color: oklch(49.2% 0.165 266.7);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3657bd",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 189
  },
  "hsl": {
    "h": 225.333,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.49158,
    "c": 0.16501,
    "h": 266.7
  },
  "luminance": 0.11275
}

Semantic roles & 50–950 ramp

primary

#3657BD

secondary

#C9B985

accent

#BA49DF

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3657BD

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

Preview Lab → · Contrast checker → · Palette generator →