#284FB7#284FB7

#284FB7 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.5% C 0.171 H 264.8°. Best body text is #FFFFFF at 7.26:1 contrast (WCAG AA passes).

Color values

HEX	#284FB7
RGB	rgb(40, 79, 183)
HSL	hsl(224, 64%, 44%)
HSV	hsv(224, 78%, 72%)
CMYK	cmyk(78.1%, 56.8%, 0%, 28.2%)
CIE-LAB	lab(36.86, 24.49, -58.91)
CIE-LCH	lch(36.86, 63.80, 292.58°)
OKLab	oklab(46.46% -0.0154 -0.17)
OKLCH	oklch(46.46% 0.171 264.8)
XYZ	xyz(12.2153, 9.4606, 45.9728)
Luminance	0.0946 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FB7 #B79028

analogous

#2896B7 #284FB7 #4828B7

triadic

#284FB7 #B7284F #4FB728

tetradic

#284FB7 #B72896 #B79028 #28B748

square

#284FB7 #B72896 #B79028 #28B748

split-complementary

#284FB7 #B74828 #96B728

monochromatic

#122453 #1D3985 #284FB7 #466DD6 #7895E1

Accessibility & contrast

On white

7.26

#284FB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#284FB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284FB7

7.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FB7	#FFFFFF	#000000	##FFFFFF
##284FB7	1.00	7.26	2.89	7.26
#FFFFFF	7.26	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBB

Deuteranopia (green-blind)

#0050B5

Tritanopia (blue-blind)

#00697B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #284fb7;
/* rgb */ color: rgb(40, 79, 183);
/* oklch */ color: oklch(46.5% 0.171 264.8);

Tailwind

colors: {
  custom: {
    50: '#787fcd',
    500: '#284fb7',
    950: '#000000',
  },
}

SCSS

$custom: #284fb7;
$custom-light: #787fcd;
$custom-dark: #000000;

JSON

{
  "hex": "#284fb7",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 183
  },
  "hsl": {
    "h": 223.636,
    "s": 64.126,
    "l": 43.725
  },
  "oklch": {
    "l": 0.46458,
    "c": 0.17073,
    "h": 264.8
  },
  "luminance": 0.09462
}

Semantic roles & 50–950 ramp

primary

#284FB7

secondary

#C9B172

accent

#BA41E7

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0A0A14

muted

#7C7C82

Preview Lab

Preview with #284FB7

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

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