#284B91#284B91

#284B91 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 42.6% C 0.123 H 262.4°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#284B91
RGB	rgb(40, 75, 145)
HSL	hsl(220, 57%, 36%)
HSV	hsv(220, 72%, 57%)
CMYK	cmyk(72.4%, 48.3%, 0%, 43.1%)
CIE-LAB	lab(32.98, 12.49, -42.42)
CIE-LCH	lch(32.98, 44.22, 286.41°)
OKLab	oklab(42.64% -0.0161 -0.1216)
OKLCH	oklch(42.64% 0.123 262.4)
XYZ	xyz(8.5002, 7.5267, 27.7874)
Luminance	0.0753 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284B91 #916E28

analogous

#288091 #284B91 #3A2891

triadic

#284B91 #91284B #4B9128

tetradic

#284B91 #912880 #916E28 #28913A

square

#284B91 #912880 #916E28 #28913A

split-complementary

#284B91 #913A28 #809128

monochromatic

#0E1931 #1B3261 #284B91 #3564C1 #6087D3

Accessibility & contrast

On white

8.38

#284B91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#284B91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284B91

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284B91	#FFFFFF	#000000	##FFFFFF
##284B91	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#265394

Deuteranopia (green-blind)

#0C4990

Tritanopia (blue-blind)

#005B67

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #284b91;
/* rgb */ color: rgb(40, 75, 145);
/* oklch */ color: oklch(42.6% 0.123 262.4);

Tailwind

colors: {
  custom: {
    50: '#707cb2',
    500: '#284b91',
    950: '#000000',
  },
}

SCSS

$custom: #284b91;
$custom-light: #707cb2;
$custom-dark: #000000;

JSON

{
  "hex": "#284b91",
  "rgb": {
    "r": 40,
    "g": 75,
    "b": 145
  },
  "hsl": {
    "h": 220,
    "s": 56.757,
    "l": 36.275
  },
  "oklch": {
    "l": 0.42639,
    "c": 0.12266,
    "h": 262.4
  },
  "luminance": 0.07528
}

Semantic roles & 50–950 ramp

primary

#284B91

secondary

#B99A5C

accent

#AD48E0

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #284B91

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

Preview Lab → · Contrast checker → · Palette generator →