#3657C8#3657C8

#3657C8 is a mid, vivid blue. Relative luminance 0.118; OKLCH L 50.0% C 0.180 H 267.2°. Best body text is #FFFFFF at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#3657C8
RGB	rgb(54, 87, 200)
HSL	hsl(226, 57%, 50%)
HSV	hsv(226, 73%, 78%)
CMYK	cmyk(73%, 56.5%, 0%, 21.6%)
CIE-LAB	lab(40.85, 27.26, -62.32)
CIE-LCH	lch(40.85, 68.02, 293.63°)
OKLab	oklab(50.02% -0.0089 -0.1797)
OKLCH	oklch(50.02% 0.18 267.2)
XYZ	xyz(15.3512, 11.7692, 56.0950)
Luminance	0.1177 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657C8 #C8A736

analogous

#36A0C8 #3657C8 #5E36C8

triadic

#3657C8 #C83657 #57C836

tetradic

#3657C8 #C836A0 #C8A736 #36C85E

square

#3657C8 #C836A0 #C8A736 #36C85E

split-complementary

#3657C8 #C85E36 #A0C836

monochromatic

#1C2D68 #294298 #3657C8 #667FD6 #96A7E3

Accessibility & contrast

On white

6.26

#3657C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#3657C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657C8

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657C8	#FFFFFF	#000000	##FFFFFF
##3657C8	1.00	6.26	3.35	6.26
#FFFFFF	6.26	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067CC

Deuteranopia (green-blind)

#005AC6

Tritanopia (blue-blind)

#007387

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3657c8;
/* rgb */ color: rgb(54, 87, 200);
/* oklch */ color: oklch(50.0% 0.180 267.2);

Tailwind

colors: {
  custom: {
    50: '#8186da',
    500: '#3657c8',
    950: '#000000',
  },
}

SCSS

$custom: #3657c8;
$custom-light: #8186da;
$custom-dark: #000000;

JSON

{
  "hex": "#3657c8",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 200
  },
  "hsl": {
    "h": 226.438,
    "s": 57.48,
    "l": 49.804
  },
  "oklch": {
    "l": 0.50023,
    "c": 0.1799,
    "h": 267.2
  },
  "luminance": 0.11771
}

Semantic roles & 50–950 ramp

primary

#3657C8

secondary

#CEBF8C

accent

#BE47E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3657C8

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

Preview Lab → · Contrast checker → · Palette generator →