#5F66E5#5F66E5

#5F66E5 is a mid, vivid blue. Relative luminance 0.176; OKLCH L 57.4% C 0.189 H 276.3°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#5F66E5
RGB	rgb(95, 102, 229)
HSL	hsl(237, 72%, 64%)
HSV	hsv(237, 59%, 90%)
CMYK	cmyk(58.5%, 55.5%, 0%, 10.2%)
CIE-LAB	lab(49.00, 34.15, -65.55)
CIE-LCH	lch(49.00, 73.92, 297.52°)
OKLab	oklab(57.39% 0.0207 -0.1881)
OKLCH	oklch(57.39% 0.189 276.3)
XYZ	xyz(23.6090, 17.5910, 76.2648)
Luminance	0.1759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5F66E5 #E5DE5F

analogous

#5FA9E5 #5F66E5 #9B5FE5

triadic

#5F66E5 #E55F66 #66E55F

tetradic

#5F66E5 #E55FA9 #E5DE5F #5FE59B

square

#5F66E5 #E55FA9 #E5DE5F #5FE59B

split-complementary

#5F66E5 #E59B5F #A9E55F

monochromatic

#1C24AD #2A34DC #5F66E5 #9498EE #C8CBF6

Accessibility & contrast

On white

4.65

#5F66E5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#5F66E5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5F66E5

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5F66E5	#FFFFFF	#000000	##FFFFFF
##5F66E5	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AE9

Deuteranopia (green-blind)

#006FE2

Tritanopia (blue-blind)

#00849C

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #5f66e5;
/* rgb */ color: rgb(95, 102, 229);
/* oklch */ color: oklch(57.4% 0.189 276.3);

Tailwind

colors: {
  custom: {
    50: '#9891ee',
    500: '#5f66e5',
    950: '#000000',
  },
}

SCSS

$custom: #5f66e5;
$custom-light: #9891ee;
$custom-dark: #000000;

JSON

{
  "hex": "#5f66e5",
  "rgb": {
    "r": 95,
    "g": 102,
    "b": 229
  },
  "hsl": {
    "h": 236.866,
    "s": 72.043,
    "l": 63.529
  },
  "oklch": {
    "l": 0.57385,
    "c": 0.18921,
    "h": 276.3
  },
  "luminance": 0.17593
}

Semantic roles & 50–950 ramp

primary

#5F66E5

secondary

#E8E5B8

accent

#CA11D4

background

#FAF8FE

surface

#F3F0FD

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #5F66E5

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

Preview Lab → · Contrast checker → · Palette generator →