#284BAB#284BAB

#284BAB is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.7% C 0.159 H 265.2°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#284BAB
RGB	rgb(40, 75, 171)
HSL	hsl(224, 62%, 41%)
HSV	hsv(224, 77%, 67%)
CMYK	cmyk(76.6%, 56.1%, 0%, 32.9%)
CIE-LAB	lab(34.85, 22.55, -55.07)
CIE-LCH	lch(34.85, 59.51, 292.27°)
OKLab	oklab(44.66% -0.0132 -0.1588)
OKLCH	oklch(44.66% 0.159 265.2)
XYZ	xyz(10.7392, 8.4223, 39.5799)
Luminance	0.0842 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284BAB #AB8828

analogous

#288DAB #284BAB #4628AB

triadic

#284BAB #AB284B #4BAB28

tetradic

#284BAB #AB288D #AB8828 #28AB46

square

#284BAB #AB288D #AB8828 #28AB46

split-complementary

#284BAB #AB4628 #8DAB28

monochromatic

#111F48 #1C3579 #284BAB #3E66D2 #708DDE

Accessibility & contrast

On white

7.82

#284BAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#284BAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284BAB

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284BAB	#FFFFFF	#000000	##FFFFFF
##284BAB	1.00	7.82	2.68	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AE

Deuteranopia (green-blind)

#004CA9

Tritanopia (blue-blind)

#006373

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #284bab;
/* rgb */ color: rgb(40, 75, 171);
/* oklch */ color: oklch(44.7% 0.159 265.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#284bab",
  "rgb": {
    "r": 40,
    "g": 75,
    "b": 171
  },
  "hsl": {
    "h": 223.969,
    "s": 62.085,
    "l": 41.373
  },
  "oklch": {
    "l": 0.44655,
    "c": 0.15937,
    "h": 265.2
  },
  "luminance": 0.08424
}

Semantic roles & 50–950 ramp

primary

#284BAB

secondary

#C4AC6A

accent

#BA43E5

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #284BAB

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

Preview Lab → · Contrast checker → · Palette generator →