#284FB2#284FB2

#284FB2 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.0% C 0.164 H 264.5°. Best body text is #FFFFFF at 7.36:1 contrast (WCAG AA passes).

Color values

HEX	#284FB2
RGB	rgb(40, 79, 178)
HSL	hsl(223, 63%, 43%)
HSV	hsv(223, 78%, 70%)
CMYK	cmyk(77.5%, 55.6%, 0%, 30.2%)
CIE-LAB	lab(36.47, 22.58, -56.58)
CIE-LCH	lch(36.47, 60.92, 291.75°)
OKLab	oklab(46.05% -0.0157 -0.1632)
OKLCH	oklch(46.05% 0.164 264.5)
XYZ	xyz(11.7041, 9.2561, 43.2806)
Luminance	0.0926 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FB2 #B28B28

analogous

#2894B2 #284FB2 #4628B2

triadic

#284FB2 #B2284F #4FB228

tetradic

#284FB2 #B22894 #B28B28 #28B246

square

#284FB2 #B22894 #B28B28 #28B246

split-complementary

#284FB2 #B24628 #94B228

monochromatic

#12234E #1D3980 #284FB2 #436CD5 #7593E0

Accessibility & contrast

On white

7.36

#284FB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#284FB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284FB2

7.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FB2	#FFFFFF	#000000	##FFFFFF
##284FB2	1.00	7.36	2.85	7.36
#FFFFFF	7.36	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB5

Deuteranopia (green-blind)

#0050B0

Tritanopia (blue-blind)

#006778

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #284fb2;
/* rgb */ color: rgb(40, 79, 178);
/* oklch */ color: oklch(46.0% 0.164 264.5);

Tailwind

colors: {
  custom: {
    50: '#777fca',
    500: '#284fb2',
    950: '#000000',
  },
}

SCSS

$custom: #284fb2;
$custom-light: #777fca;
$custom-dark: #000000;

JSON

{
  "hex": "#284fb2",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 178
  },
  "hsl": {
    "h": 223.043,
    "s": 63.303,
    "l": 42.745
  },
  "oklch": {
    "l": 0.46049,
    "c": 0.16395,
    "h": 264.5
  },
  "luminance": 0.09257
}

Semantic roles & 50–950 ramp

primary

#284FB2

secondary

#C7AE6F

accent

#B841E6

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #284FB2

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

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