#284BBD#284BBD

#284BBD is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.2% C 0.184 H 266.1°. Best body text is #FFFFFF at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#284BBD
RGB	rgb(40, 75, 189)
HSL	hsl(226, 65%, 45%)
HSV	hsv(226, 79%, 74%)
CMYK	cmyk(78.8%, 60.3%, 0%, 25.9%)
CIE-LAB	lab(36.28, 29.41, -63.37)
CIE-LCH	lch(36.28, 69.86, 294.89°)
OKLab	oklab(46.18% -0.0125 -0.1832)
OKLCH	oklch(46.18% 0.184 266.1)
XYZ	xyz(12.5732, 9.1559, 49.2389)
Luminance	0.0916 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284BBD #BD9A28

analogous

#2896BD #284BBD #4F28BD

triadic

#284BBD #BD284B #4BBD28

tetradic

#284BBD #BD2896 #BD9A28 #28BD4F

square

#284BBD #BD2896 #BD9A28 #28BD4F

split-complementary

#284BBD #BD4F28 #96BD28

monochromatic

#132358 #1D378A #284BBD #4A6BD9 #7C94E3

Accessibility & contrast

On white

7.42

#284BBD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#284BBD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284BBD

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284BBD	#FFFFFF	#000000	##FFFFFF
##284BBD	1.00	7.42	2.83	7.42
#FFFFFF	7.42	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC1

Deuteranopia (green-blind)

#004FBB

Tritanopia (blue-blind)

#00687D

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #284bbd;
/* rgb */ color: rgb(40, 75, 189);
/* oklch */ color: oklch(46.2% 0.184 266.1);

Tailwind

colors: {
  custom: {
    50: '#7a7cd2',
    500: '#284bbd',
    950: '#000000',
  },
}

SCSS

$custom: #284bbd;
$custom-light: #7a7cd2;
$custom-dark: #000000;

JSON

{
  "hex": "#284bbd",
  "rgb": {
    "r": 40,
    "g": 75,
    "b": 189
  },
  "hsl": {
    "h": 225.906,
    "s": 65.066,
    "l": 44.902
  },
  "oklch": {
    "l": 0.46179,
    "c": 0.18363,
    "h": 266.1
  },
  "luminance": 0.09157
}

Semantic roles & 50–950 ramp

primary

#284BBD

secondary

#CBB775

accent

#C140E8

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0914

muted

#7C7B83

Preview Lab

Preview with #284BBD

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

Preview Lab → · Contrast checker → · Palette generator →