#284FA8#284FA8

#284FA8 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.3% C 0.150 H 263.7°. Best body text is #FFFFFF at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#284FA8
RGB	rgb(40, 79, 168)
HSL	hsl(222, 62%, 41%)
HSV	hsv(222, 76%, 66%)
CMYK	cmyk(76.2%, 53%, 0%, 34.1%)
CIE-LAB	lab(35.73, 18.72, -51.85)
CIE-LCH	lch(35.73, 55.12, 289.85°)
OKLab	oklab(45.25% -0.0166 -0.1493)
OKLCH	oklch(45.25% 0.15 263.7)
XYZ	xyz(10.7364, 8.8690, 38.1842)
Luminance	0.0887 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FA8 #A88128

analogous

#288FA8 #284FA8 #4128A8

triadic

#284FA8 #A8284F #4FA828

tetradic

#284FA8 #A8288F #A88128 #28A841

square

#284FA8 #A8288F #A88128 #28A841

split-complementary

#284FA8 #A84128 #8FA828

monochromatic

#102145 #1C3877 #284FA8 #3D6AD1 #6E90DC

Accessibility & contrast

On white

7.57

#284FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#284FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284FA8

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FA8	#FFFFFF	#000000	##FFFFFF
##284FA8	1.00	7.57	2.77	7.57
#FFFFFF	7.57	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#105AAB

Deuteranopia (green-blind)

#004EA6

Tritanopia (blue-blind)

#006574

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #284fa8;
/* rgb */ color: rgb(40, 79, 168);
/* oklch */ color: oklch(45.3% 0.150 263.7);

Tailwind

colors: {
  custom: {
    50: '#757fc2',
    500: '#284fa8',
    950: '#000000',
  },
}

SCSS

$custom: #284fa8;
$custom-light: #757fc2;
$custom-dark: #000000;

JSON

{
  "hex": "#284fa8",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 168
  },
  "hsl": {
    "h": 221.719,
    "s": 61.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.45253,
    "c": 0.1502,
    "h": 263.7
  },
  "luminance": 0.0887
}

Semantic roles & 50–950 ramp

primary

#284FA8

secondary

#C3A869

accent

#B343E5

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #284FA8

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

Preview Lab → · Contrast checker → · Palette generator →