#3658CC#3658CC

#3658CC is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.5% C 0.184 H 267.1°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#3658CC
RGB	rgb(54, 88, 204)
HSL	hsl(226, 60%, 51%)
HSV	hsv(226, 74%, 80%)
CMYK	cmyk(73.5%, 56.9%, 0%, 20%)
CIE-LAB	lab(41.41, 28.09, -63.72)
CIE-LCH	lch(41.41, 69.63, 293.79°)
OKLab	oklab(50.54% -0.0094 -0.1838)
OKLCH	oklch(50.54% 0.184 267.1)
XYZ	xyz(15.9063, 12.1216, 58.6164)
Luminance	0.1212 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3658CC #CCAA36

analogous

#36A3CC #3658CC #5F36CC

triadic

#3658CC #CC3658 #58CC36

tetradic

#3658CC #CC36A3 #CCAA36 #36CC5F

square

#3658CC #CC36A3 #CCAA36 #36CC5F

split-complementary

#3658CC #CC5F36 #A3CC36

monochromatic

#1B2E6C #28429D #3658CC #6781D8 #98A9E5

Accessibility & contrast

On white

6.13

#3658CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#3658CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3658CC

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3658CC	#FFFFFF	#000000	##FFFFFF
##3658CC	1.00	6.13	3.42	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D0

Deuteranopia (green-blind)

#005BCA

Tritanopia (blue-blind)

#007589

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3658cc;
/* rgb */ color: rgb(54, 88, 204);
/* oklch */ color: oklch(50.5% 0.184 267.1);

Tailwind

colors: {
  custom: {
    50: '#8186dc',
    500: '#3658cc',
    950: '#000000',
  },
}

SCSS

$custom: #3658cc;
$custom-light: #8186dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3658cc",
  "rgb": {
    "r": 54,
    "g": 88,
    "b": 204
  },
  "hsl": {
    "h": 226.4,
    "s": 59.524,
    "l": 50.588
  },
  "oklch": {
    "l": 0.5054,
    "c": 0.18402,
    "h": 267.1
  },
  "luminance": 0.12123
}

Semantic roles & 50–950 ramp

primary

#3658CC

secondary

#D0C18E

accent

#BF45E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3658CC

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

Preview Lab → · Contrast checker → · Palette generator →