#0028FF#0028FF

#0028FF is a mid, highly saturated blue. Relative luminance 0.087; OKLCH L 47.4% C 0.299 H 264.2°. Best body text is #FFFFFF at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#0028FF
RGB	rgb(0, 40, 255)
HSL	hsl(231, 100%, 50%)
HSV	hsv(231, 100%, 100%)
CMYK	cmyk(100%, 84.3%, 0%, 0%)
CIE-LAB	lab(35.47, 69.49, -102.56)
CIE-LCH	lch(35.47, 123.88, 304.12°)
OKLab	oklab(47.36% -0.0301 -0.2971)
OKLCH	oklch(47.36% 0.299 264.2)
XYZ	xyz(18.8025, 8.7350, 95.2833)
Luminance	0.0874 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0028FF #FFD700

analogous

#00A8FF #0028FF #5700FF

triadic

#0028FF #FF0028 #28FF00

tetradic

#0028FF #FF00A8 #FFD700 #00FF57

square

#0028FF #FF00A8 #FFD700 #00FF57

split-complementary

#0028FF #FF5700 #A8FF00

monochromatic

#001585 #001EC2 #0028FF #3D5CFF #7A8FFF

Accessibility & contrast

On white

7.64

#0028FF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#0028FF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0028FF

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0028FF	#FFFFFF	#000000	##FFFFFF
##0028FF	1.00	7.64	2.75	7.64
#FFFFFF	7.64	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060FF

Deuteranopia (green-blind)

#0046FC

Tritanopia (blue-blind)

#007299

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #0028ff;
/* rgb */ color: rgb(0, 40, 255);
/* oklch */ color: oklch(47.4% 0.299 264.2);

Tailwind

colors: {
  custom: {
    50: '#8869ff',
    500: '#0028ff',
    950: '#000000',
  },
}

SCSS

$custom: #0028ff;
$custom-light: #8869ff;
$custom-dark: #000000;

JSON

{
  "hex": "#0028ff",
  "rgb": {
    "r": 0,
    "g": 40,
    "b": 255
  },
  "hsl": {
    "h": 230.588,
    "s": 100,
    "l": 50
  },
  "oklch": {
    "l": 0.4736,
    "c": 0.2986,
    "h": 264.2
  },
  "luminance": 0.08738
}

Semantic roles & 50–950 ramp

primary

#0028FF

secondary

#E7D574

accent

#DD29FF

background

#F9F6FF

surface

#F2EBFF

border

#CCC6D7

text

#0F0718

muted

#7E7A86

Preview Lab

Preview with #0028FF

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

Preview Lab → · Contrast checker → · Palette generator →