#3659CF#3659CF

#3659CF is a mid, vivid blue. Relative luminance 0.124; OKLCH L 51.0% C 0.187 H 266.9°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#3659CF
RGB	rgb(54, 89, 207)
HSL	hsl(226, 61%, 51%)
HSV	hsv(226, 74%, 81%)
CMYK	cmyk(73.9%, 57%, 0%, 18.8%)
CIE-LAB	lab(41.90, 28.54, -64.66)
CIE-LCH	lch(41.90, 70.67, 293.82°)
OKLab	oklab(50.98% -0.01 -0.1865)
OKLCH	oklch(50.98% 0.187 266.9)
XYZ	xyz(16.3523, 12.4323, 60.5572)
Luminance	0.1243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3659CF #CFAC36

analogous

#36A5CF #3659CF #5F36CF

triadic

#3659CF #CF3659 #59CF36

tetradic

#3659CF #CF36A5 #CFAC36 #36CF5F

square

#3659CF #CF36A5 #CFAC36 #36CF5F

split-complementary

#3659CF #CF5F36 #A5CF36

monochromatic

#1B2E70 #2743A1 #3659CF #6782DB #99ABE7

Accessibility & contrast

On white

6.02

#3659CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#3659CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3659CF

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3659CF	#FFFFFF	#000000	##FFFFFF
##3659CF	1.00	6.02	3.49	6.02
#FFFFFF	6.02	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD3

Deuteranopia (green-blind)

#005CCD

Tritanopia (blue-blind)

#00768B

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3659cf;
/* rgb */ color: rgb(54, 89, 207);
/* oklch */ color: oklch(51.0% 0.187 266.9);

Tailwind

colors: {
  custom: {
    50: '#8287df',
    500: '#3659cf',
    950: '#000000',
  },
}

SCSS

$custom: #3659cf;
$custom-light: #8287df;
$custom-dark: #000000;

JSON

{
  "hex": "#3659cf",
  "rgb": {
    "r": 54,
    "g": 89,
    "b": 207
  },
  "hsl": {
    "h": 226.275,
    "s": 61.446,
    "l": 51.176
  },
  "oklch": {
    "l": 0.50975,
    "c": 0.18679,
    "h": 266.9
  },
  "luminance": 0.12434
}

Semantic roles & 50–950 ramp

primary

#3659CF

secondary

#D2C38F

accent

#C043E5

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3659CF

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

Preview Lab → · Contrast checker → · Palette generator →