#3657BC#3657BC

#3657BC is a mid, vivid blue. Relative luminance 0.112; OKLCH L 49.1% C 0.164 H 266.6°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#3657BC
RGB	rgb(54, 87, 188)
HSL	hsl(225, 55%, 47%)
HSV	hsv(225, 71%, 74%)
CMYK	cmyk(71.3%, 53.7%, 0%, 26.3%)
CIE-LAB	lab(39.97, 22.85, -56.77)
CIE-LCH	lch(39.97, 61.20, 291.93°)
OKLab	oklab(49.08% -0.0096 -0.1634)
OKLCH	oklch(49.08% 0.164 266.6)
XYZ	xyz(14.0035, 11.2301, 48.9968)
Luminance	0.1123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657BC #BC9B36

analogous

#369ABC #3657BC #5836BC

triadic

#3657BC #BC3657 #57BC36

tetradic

#3657BC #BC369A #BC9B36 #36BC58

square

#3657BC #BC369A #BC9B36 #36BC58

split-complementary

#3657BC #BC5836 #9ABC36

monochromatic

#1B2B5D #28418C #3657BC #5E7BD1 #8EA2DF

Accessibility & contrast

On white

6.47

#3657BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#3657BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657BC

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657BC	#FFFFFF	#000000	##FFFFFF
##3657BC	1.00	6.47	3.25	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A65C0

Deuteranopia (green-blind)

#0058BA

Tritanopia (blue-blind)

#006F81

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3657bc;
/* rgb */ color: rgb(54, 87, 188);
/* oklch */ color: oklch(49.1% 0.164 266.6);

Tailwind

colors: {
  custom: {
    50: '#7e85d1',
    500: '#3657bc',
    950: '#000000',
  },
}

SCSS

$custom: #3657bc;
$custom-light: #7e85d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3657bc",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 188
  },
  "hsl": {
    "h": 225.224,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.49081,
    "c": 0.16364,
    "h": 266.6
  },
  "luminance": 0.11231
}

Semantic roles & 50–950 ramp

primary

#3657BC

secondary

#C9B885

accent

#BA49DF

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3657BC

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

Preview Lab → · Contrast checker → · Palette generator →