#3657C9#3657C9

#3657C9 is a mid, vivid blue. Relative luminance 0.118; OKLCH L 50.1% C 0.181 H 267.2°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#3657C9
RGB	rgb(54, 87, 201)
HSL	hsl(227, 58%, 50%)
HSV	hsv(227, 73%, 79%)
CMYK	cmyk(73.1%, 56.7%, 0%, 21.2%)
CIE-LAB	lab(40.92, 27.63, -62.78)
CIE-LCH	lch(40.92, 68.59, 293.76°)
OKLab	oklab(50.1% -0.0088 -0.181)
OKLCH	oklch(50.1% 0.181 267.2)
XYZ	xyz(15.4685, 11.8161, 56.7125)
Luminance	0.1182 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657C9 #C9A836

analogous

#36A0C9 #3657C9 #5F36C9

triadic

#3657C9 #C93657 #57C936

tetradic

#3657C9 #C936A0 #C9A836 #36C95F

square

#3657C9 #C936A0 #C9A836 #36C95F

split-complementary

#3657C9 #C95F36 #A0C936

monochromatic

#1C2D69 #294299 #3657C9 #667FD6 #96A8E3

Accessibility & contrast

On white

6.24

#3657C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#3657C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657C9

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657C9	#FFFFFF	#000000	##FFFFFF
##3657C9	1.00	6.24	3.36	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CD

Deuteranopia (green-blind)

#005AC7

Tritanopia (blue-blind)

#007387

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3657c9;
/* rgb */ color: rgb(54, 87, 201);
/* oklch */ color: oklch(50.1% 0.181 267.2);

Tailwind

colors: {
  custom: {
    50: '#8186da',
    500: '#3657c9',
    950: '#000000',
  },
}

SCSS

$custom: #3657c9;
$custom-light: #8186da;
$custom-dark: #000000;

JSON

{
  "hex": "#3657c9",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 201
  },
  "hsl": {
    "h": 226.531,
    "s": 57.647,
    "l": 50
  },
  "oklch": {
    "l": 0.50104,
    "c": 0.18124,
    "h": 267.2
  },
  "luminance": 0.11818
}

Semantic roles & 50–950 ramp

primary

#3657C9

secondary

#CEC08C

accent

#BE47E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3657C9

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

Preview Lab → · Contrast checker → · Palette generator →