#3657AF#3657AF

#3657AF is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.1% C 0.146 H 265.7°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX	#3657AF
RGB	rgb(54, 87, 175)
HSL	hsl(224, 53%, 45%)
HSV	hsv(224, 69%, 69%)
CMYK	cmyk(69.1%, 50.3%, 0%, 31.4%)
CIE-LAB	lab(39.06, 18.05, -50.59)
CIE-LCH	lch(39.06, 53.72, 289.63°)
OKLab	oklab(48.11% -0.0109 -0.1452)
OKLCH	oklch(48.11% 0.146 265.7)
XYZ	xyz(12.6647, 10.6945, 41.9459)
Luminance	0.1070 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657AF #AF8E36

analogous

#3694AF #3657AF #5136AF

triadic

#3657AF #AF3657 #57AF36

tetradic

#3657AF #AF3694 #AF8E36 #36AF51

square

#3657AF #AF3694 #AF8E36 #36AF51

split-complementary

#3657AF #AF5136 #94AF36

monochromatic

#192851 #284080 #3657AF #5777CB #869DDA

Accessibility & contrast

On white

6.69

#3657AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3657AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657AF

6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657AF	#FFFFFF	#000000	##FFFFFF
##3657AF	1.00	6.69	3.14	6.69
#FFFFFF	6.69	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2562B2

Deuteranopia (green-blind)

#0057AD

Tritanopia (blue-blind)

#006C7B

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3657af;
/* rgb */ color: rgb(54, 87, 175);
/* oklch */ color: oklch(48.1% 0.146 265.7);

Tailwind

colors: {
  custom: {
    50: '#7b85c7',
    500: '#3657af',
    950: '#000000',
  },
}

SCSS

$custom: #3657af;
$custom-light: #7b85c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3657af",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 175
  },
  "hsl": {
    "h": 223.636,
    "s": 52.838,
    "l": 44.902
  },
  "oklch": {
    "l": 0.48108,
    "c": 0.1456,
    "h": 265.7
  },
  "luminance": 0.10696
}

Semantic roles & 50–950 ramp

primary

#3657AF

secondary

#C3B07D

accent

#B54CDC

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3657AF

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

Preview Lab → · Contrast checker → · Palette generator →