#284FA9#284FA9

#284FA9 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.3% C 0.152 H 263.8°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#284FA9
RGB	rgb(40, 79, 169)
HSL	hsl(222, 62%, 41%)
HSV	hsv(222, 76%, 66%)
CMYK	cmyk(76.3%, 53.3%, 0%, 33.7%)
CIE-LAB	lab(35.80, 19.11, -52.33)
CIE-LCH	lch(35.80, 55.71, 290.06°)
OKLab	oklab(45.33% -0.0165 -0.1507)
OKLCH	oklch(45.33% 0.152 263.8)
XYZ	xyz(10.8299, 8.9064, 38.6768)
Luminance	0.0891 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FA9 #A98228

analogous

#288FA9 #284FA9 #4128A9

triadic

#284FA9 #A9284F #4FA928

tetradic

#284FA9 #A9288F #A98228 #28A941

square

#284FA9 #A9288F #A98228 #28A941

split-complementary

#284FA9 #A94128 #8FA928

monochromatic

#112146 #1C3878 #284FA9 #3D6AD1 #6F90DD

Accessibility & contrast

On white

7.55

#284FA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#284FA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284FA9

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FA9	#FFFFFF	#000000	##FFFFFF
##284FA9	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E5AAC

Deuteranopia (green-blind)

#004FA7

Tritanopia (blue-blind)

#006574

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #284fa9;
/* rgb */ color: rgb(40, 79, 169);
/* oklch */ color: oklch(45.3% 0.152 263.8);

Tailwind

colors: {
  custom: {
    50: '#757fc3',
    500: '#284fa9',
    950: '#000000',
  },
}

SCSS

$custom: #284fa9;
$custom-light: #757fc3;
$custom-dark: #000000;

JSON

{
  "hex": "#284fa9",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 169
  },
  "hsl": {
    "h": 221.86,
    "s": 61.722,
    "l": 40.98
  },
  "oklch": {
    "l": 0.45331,
    "c": 0.15158,
    "h": 263.8
  },
  "luminance": 0.08908
}

Semantic roles & 50–950 ramp

primary

#284FA9

secondary

#C4A869

accent

#B443E5

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #284FA9

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

Preview Lab → · Contrast checker → · Palette generator →