#3657BA#3657BA

#3657BA is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.9% C 0.161 H 266.5°. Best body text is #FFFFFF at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#3657BA
RGB	rgb(54, 87, 186)
HSL	hsl(225, 55%, 47%)
HSV	hsv(225, 71%, 73%)
CMYK	cmyk(71%, 53.2%, 0%, 27.1%)
CIE-LAB	lab(39.82, 22.11, -55.83)
CIE-LCH	lch(39.82, 60.05, 291.61°)
OKLab	oklab(48.93% -0.0098 -0.1606)
OKLCH	oklch(48.93% 0.161 266.5)
XYZ	xyz(13.7894, 11.1444, 47.8692)
Luminance	0.1115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657BA #BA9936

analogous

#3699BA #3657BA #5736BA

triadic

#3657BA #BA3657 #57BA36

tetradic

#3657BA #BA3699 #BA9936 #36BA57

square

#3657BA #BA3699 #BA9936 #36BA57

split-complementary

#3657BA #BA5736 #99BA36

monochromatic

#1A2B5B #28418B #3657BA #5D7AD0 #8DA1DE

Accessibility & contrast

On white

6.50

#3657BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#3657BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657BA

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657BA	#FFFFFF	#000000	##FFFFFF
##3657BA	1.00	6.50	3.23	6.50
#FFFFFF	6.50	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1064BD

Deuteranopia (green-blind)

#0058B8

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3657ba;
/* rgb */ color: rgb(54, 87, 186);
/* oklch */ color: oklch(48.9% 0.161 266.5);

Tailwind

colors: {
  custom: {
    50: '#7e85cf',
    500: '#3657ba',
    950: '#000000',
  },
}

SCSS

$custom: #3657ba;
$custom-light: #7e85cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3657ba",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 186
  },
  "hsl": {
    "h": 225,
    "s": 55,
    "l": 47.059
  },
  "oklch": {
    "l": 0.48928,
    "c": 0.1609,
    "h": 266.5
  },
  "luminance": 0.11146
}

Semantic roles & 50–950 ramp

primary

#3657BA

secondary

#C8B784

accent

#B949DE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3657BA

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

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