#284AAB#284AAB

#284AAB is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.5% C 0.161 H 265.5°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#284AAB
RGB	rgb(40, 74, 171)
HSL	hsl(224, 62%, 41%)
HSV	hsv(224, 77%, 67%)
CMYK	cmyk(76.6%, 56.7%, 0%, 32.9%)
CIE-LAB	lab(34.58, 23.22, -55.51)
CIE-LCH	lch(34.58, 60.17, 292.70°)
OKLab	oklab(44.45% -0.0125 -0.1601)
OKLCH	oklch(44.45% 0.161 265.5)
XYZ	xyz(10.6719, 8.2878, 39.5574)
Luminance	0.0829 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284AAB #AB8928

analogous

#288CAB #284AAB #4728AB

triadic

#284AAB #AB284A #4AAB28

tetradic

#284AAB #AB288C #AB8928 #28AB47

square

#284AAB #AB288C #AB8928 #28AB47

split-complementary

#284AAB #AB4728 #8CAB28

monochromatic

#111F48 #1C3579 #284AAB #3E65D2 #708CDE

Accessibility & contrast

On white

7.90

#284AAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#284AAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284AAB

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284AAB	#FFFFFF	#000000	##FFFFFF
##284AAB	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AE

Deuteranopia (green-blind)

#004BA9

Tritanopia (blue-blind)

#006273

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #284aab;
/* rgb */ color: rgb(40, 74, 171);
/* oklch */ color: oklch(44.5% 0.161 265.5);

Tailwind

colors: {
  custom: {
    50: '#767cc5',
    500: '#284aab',
    950: '#000000',
  },
}

SCSS

$custom: #284aab;
$custom-light: #767cc5;
$custom-dark: #000000;

JSON

{
  "hex": "#284aab",
  "rgb": {
    "r": 40,
    "g": 74,
    "b": 171
  },
  "hsl": {
    "h": 224.427,
    "s": 62.085,
    "l": 41.373
  },
  "oklch": {
    "l": 0.4445,
    "c": 0.16063,
    "h": 265.5
  },
  "luminance": 0.08289
}

Semantic roles & 50–950 ramp

primary

#284AAB

secondary

#C4AD6A

accent

#BB43E5

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #284AAB

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

Preview Lab → · Contrast checker → · Palette generator →