#3658D1#3658D1

#3658D1 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.9% C 0.191 H 267.2°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#3658D1
RGB	rgb(54, 88, 209)
HSL	hsl(227, 63%, 52%)
HSV	hsv(227, 74%, 82%)
CMYK	cmyk(74.2%, 57.9%, 0%, 18%)
CIE-LAB	lab(41.79, 29.91, -65.98)
CIE-LCH	lch(41.79, 72.44, 294.39°)
OKLab	oklab(50.95% -0.0092 -0.1904)
OKLCH	oklch(50.95% 0.191 267.2)
XYZ	xyz(16.5157, 12.3654, 61.8256)
Luminance	0.1237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3658D1 #D1AF36

analogous

#36A5D1 #3658D1 #6236D1

triadic

#3658D1 #D13658 #58D136

tetradic

#3658D1 #D136A5 #D1AF36 #36D162

square

#3658D1 #D136A5 #D1AF36 #36D162

split-complementary

#3658D1 #D16236 #A5D136

monochromatic

#1A2E72 #2641A4 #3658D1 #6881DC #9AABE8

Accessibility & contrast

On white

6.05

#3658D1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#3658D1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3658D1

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3658D1	#FFFFFF	#000000	##FFFFFF
##3658D1	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD5

Deuteranopia (green-blind)

#005CCF

Tritanopia (blue-blind)

#00768C

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3658d1;
/* rgb */ color: rgb(54, 88, 209);
/* oklch */ color: oklch(50.9% 0.191 267.2);

Tailwind

colors: {
  custom: {
    50: '#8386e0',
    500: '#3658d1',
    950: '#000000',
  },
}

SCSS

$custom: #3658d1;
$custom-light: #8386e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3658d1",
  "rgb": {
    "r": 54,
    "g": 88,
    "b": 209
  },
  "hsl": {
    "h": 226.839,
    "s": 62.753,
    "l": 51.569
  },
  "oklch": {
    "l": 0.50946,
    "c": 0.19063,
    "h": 267.2
  },
  "luminance": 0.12367
}

Semantic roles & 50–950 ramp

primary

#3658D1

secondary

#D3C58F

accent

#C242E6

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3658D1

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

Preview Lab → · Contrast checker → · Palette generator →