#284FBA#284FBA

#284FBA is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.7% C 0.175 H 265.0°. Best body text is #FFFFFF at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#284FBA
RGB	rgb(40, 79, 186)
HSL	hsl(224, 65%, 44%)
HSV	hsv(224, 78%, 73%)
CMYK	cmyk(78.5%, 57.5%, 0%, 27.1%)
CIE-LAB	lab(37.09, 25.64, -60.29)
CIE-LCH	lch(37.09, 65.52, 293.04°)
OKLab	oklab(46.71% -0.0152 -0.1741)
OKLCH	oklch(46.71% 0.175 265)
XYZ	xyz(12.5308, 9.5868, 47.6349)
Luminance	0.0959 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FBA #BA9328

analogous

#2898BA #284FBA #4A28BA

triadic

#284FBA #BA284F #4FBA28

tetradic

#284FBA #BA2898 #BA9328 #28BA4A

square

#284FBA #BA2898 #BA9328 #28BA4A

split-complementary

#284FBA #BA4A28 #98BA28

monochromatic

#122455 #1D3A88 #284FBA #486ED8 #7A96E2

Accessibility & contrast

On white

7.20

#284FBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#284FBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284FBA

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FBA	#FFFFFF	#000000	##FFFFFF
##284FBA	1.00	7.20	2.92	7.20
#FFFFFF	7.20	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBE

Deuteranopia (green-blind)

#0051B8

Tritanopia (blue-blind)

#006A7D

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #284fba;
/* rgb */ color: rgb(40, 79, 186);
/* oklch */ color: oklch(46.7% 0.175 265.0);

Tailwind

colors: {
  custom: {
    50: '#797fd0',
    500: '#284fba',
    950: '#000000',
  },
}

SCSS

$custom: #284fba;
$custom-light: #797fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#284fba",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 186
  },
  "hsl": {
    "h": 223.973,
    "s": 64.602,
    "l": 44.314
  },
  "oklch": {
    "l": 0.46708,
    "c": 0.17477,
    "h": 265
  },
  "luminance": 0.09588
}

Semantic roles & 50–950 ramp

primary

#284FBA

secondary

#CAB373

accent

#BB40E8

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #284FBA

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

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