#3657CA#3657CA

#3657CA is a mid, vivid blue. Relative luminance 0.119; OKLCH L 50.2% C 0.183 H 267.2°. Best body text is #FFFFFF at 6.23:1 contrast (WCAG AA passes).

Color values

HEX	#3657CA
RGB	rgb(54, 87, 202)
HSL	hsl(227, 58%, 50%)
HSV	hsv(227, 73%, 79%)
CMYK	cmyk(73.3%, 56.9%, 0%, 20.8%)
CIE-LAB	lab(41.00, 28.00, -63.23)
CIE-LCH	lch(41.00, 69.15, 293.88°)
OKLab	oklab(50.18% -0.0088 -0.1824)
OKLCH	oklch(50.18% 0.183 267.2)
XYZ	xyz(15.5865, 11.8633, 57.3341)
Luminance	0.1187 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657CA #CAA936

analogous

#36A1CA #3657CA #5F36CA

triadic

#3657CA #CA3657 #57CA36

tetradic

#3657CA #CA36A1 #CAA936 #36CA5F

square

#3657CA #CA36A1 #CAA936 #36CA5F

split-complementary

#3657CA #CA5F36 #A1CA36

monochromatic

#1C2D6A #29429A #3657CA #667FD7 #97A8E4

Accessibility & contrast

On white

6.23

#3657CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#3657CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657CA

6.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657CA	#FFFFFF	#000000	##FFFFFF
##3657CA	1.00	6.23	3.37	6.23
#FFFFFF	6.23	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CE

Deuteranopia (green-blind)

#005AC8

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3657ca;
/* rgb */ color: rgb(54, 87, 202);
/* oklch */ color: oklch(50.2% 0.183 267.2);

Tailwind

colors: {
  custom: {
    50: '#8186db',
    500: '#3657ca',
    950: '#000000',
  },
}

SCSS

$custom: #3657ca;
$custom-light: #8186db;
$custom-dark: #000000;

JSON

{
  "hex": "#3657ca",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 202
  },
  "hsl": {
    "h": 226.622,
    "s": 58.268,
    "l": 50.196
  },
  "oklch": {
    "l": 0.50184,
    "c": 0.18257,
    "h": 267.2
  },
  "luminance": 0.11865
}

Semantic roles & 50–950 ramp

primary

#3657CA

secondary

#CFC08D

accent

#BF46E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3657CA

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

Preview Lab → · Contrast checker → · Palette generator →