#5F66CF#5F66CF

#5F66CF is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.8% C 0.159 H 277.0°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#5F66CF
RGB	rgb(95, 102, 207)
HSL	hsl(236, 54%, 59%)
HSV	hsv(236, 54%, 81%)
CMYK	cmyk(54.1%, 50.7%, 0%, 18.8%)
CIE-LAB	lab(47.55, 27.06, -55.40)
CIE-LCH	lch(47.55, 61.66, 296.04°)
OKLab	oklab(55.84% 0.0195 -0.1582)
OKLCH	oklch(55.84% 0.159 277)
XYZ	xyz(20.7296, 16.4393, 61.1001)
Luminance	0.1644 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5F66CF #CFC85F

analogous

#5F9ECF #5F66CF #905FCF

triadic

#5F66CF #CF5F66 #66CF5F

tetradic

#5F66CF #CF5F9E #CFC85F #5FCF90

square

#5F66CF #CF5F9E #CFC85F #5FCF90

split-complementary

#5F66CF #CF905F #9ECF5F

monochromatic

#292F8A #3840B9 #5F66CF #8E93DD #BDC0EB

Accessibility & contrast

On white

4.90

#5F66CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#5F66CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5F66CF

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5F66CF	#FFFFFF	#000000	##FFFFFF
##5F66CF	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3075D3

Deuteranopia (green-blind)

#206CCD

Tritanopia (blue-blind)

#297D91

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #5f66cf;
/* rgb */ color: rgb(95, 102, 207);
/* oklch */ color: oklch(55.8% 0.159 277.0);

Tailwind

colors: {
  custom: {
    50: '#9591de',
    500: '#5f66cf',
    950: '#000000',
  },
}

SCSS

$custom: #5f66cf;
$custom-light: #9591de;
$custom-dark: #000000;

JSON

{
  "hex": "#5f66cf",
  "rgb": {
    "r": 95,
    "g": 102,
    "b": 207
  },
  "hsl": {
    "h": 236.25,
    "s": 53.846,
    "l": 59.216
  },
  "oklch": {
    "l": 0.55836,
    "c": 0.15942,
    "h": 277
  },
  "luminance": 0.16441
}

Semantic roles & 50–950 ramp

primary

#5F66CF

secondary

#DBD8AF

accent

#D44BDD

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #5F66CF

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

Preview Lab → · Contrast checker → · Palette generator →