#3657C7#3657C7

#3657C7 is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.9% C 0.179 H 267.1°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#3657C7
RGB	rgb(54, 87, 199)
HSL	hsl(226, 57%, 50%)
HSV	hsv(226, 73%, 78%)
CMYK	cmyk(72.9%, 56.3%, 0%, 22%)
CIE-LAB	lab(40.77, 26.90, -61.86)
CIE-LCH	lch(40.77, 67.46, 293.50°)
OKLab	oklab(49.94% -0.0089 -0.1783)
OKLCH	oklch(49.94% 0.179 267.1)
XYZ	xyz(15.2347, 11.7226, 55.4815)
Luminance	0.1172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657C7 #C7A636

analogous

#369FC7 #3657C7 #5E36C7

triadic

#3657C7 #C73657 #57C736

tetradic

#3657C7 #C7369F #C7A636 #36C75E

square

#3657C7 #C7369F #C7A636 #36C75E

split-complementary

#3657C7 #C75E36 #9FC736

monochromatic

#1C2D67 #294297 #3657C7 #657FD5 #95A7E2

Accessibility & contrast

On white

6.28

#3657C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#3657C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657C7

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657C7	#FFFFFF	#000000	##FFFFFF
##3657C7	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067CB

Deuteranopia (green-blind)

#005AC5

Tritanopia (blue-blind)

#007386

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3657c7;
/* rgb */ color: rgb(54, 87, 199);
/* oklch */ color: oklch(49.9% 0.179 267.1);

Tailwind

colors: {
  custom: {
    50: '#8086d9',
    500: '#3657c7',
    950: '#000000',
  },
}

SCSS

$custom: #3657c7;
$custom-light: #8086d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3657c7",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 199
  },
  "hsl": {
    "h": 226.345,
    "s": 57.312,
    "l": 49.608
  },
  "oklch": {
    "l": 0.49943,
    "c": 0.17856,
    "h": 267.1
  },
  "luminance": 0.11724
}

Semantic roles & 50–950 ramp

primary

#3657C7

secondary

#CEBE8B

accent

#BE47E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3657C7

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

Preview Lab → · Contrast checker → · Palette generator →