#284F90#284F90

#284F90 is a dark, moderate blue. Relative luminance 0.081; OKLCH L 43.5% C 0.116 H 260.0°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#284F90
RGB	rgb(40, 79, 144)
HSL	hsl(218, 57%, 36%)
HSV	hsv(218, 72%, 56%)
CMYK	cmyk(72.2%, 45.1%, 0%, 43.5%)
CIE-LAB	lab(34.10, 9.42, -40.01)
CIE-LCH	lch(34.10, 41.10, 283.25°)
OKLab	oklab(43.48% -0.0201 -0.1144)
OKLCH	oklch(43.48% 0.116 260)
XYZ	xyz(8.7033, 8.0558, 27.4764)
Luminance	0.0806 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284F90 #906928

analogous

#288390 #284F90 #352890

triadic

#284F90 #90284F #4F9028

tetradic

#284F90 #902883 #906928 #289035

square

#284F90 #902883 #906928 #289035

split-complementary

#284F90 #903528 #839028

monochromatic

#0D1A30 #1B3560 #284F90 #3569C0 #608BD3

Accessibility & contrast

On white

8.04

#284F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#284F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284F90

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284F90	#FFFFFF	#000000	##FFFFFF
##284F90	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5592

Deuteranopia (green-blind)

#1C4C8F

Tritanopia (blue-blind)

#005E68

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #284f90;
/* rgb */ color: rgb(40, 79, 144);
/* oklch */ color: oklch(43.5% 0.116 260.0);

Tailwind

colors: {
  custom: {
    50: '#6f7fb1',
    500: '#284f90',
    950: '#000000',
  },
}

SCSS

$custom: #284f90;
$custom-light: #6f7fb1;
$custom-dark: #000000;

JSON

{
  "hex": "#284f90",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 144
  },
  "hsl": {
    "h": 217.5,
    "s": 56.522,
    "l": 36.078
  },
  "oklch": {
    "l": 0.43481,
    "c": 0.1162,
    "h": 260
  },
  "luminance": 0.08057
}

Semantic roles & 50–950 ramp

primary

#284F90

secondary

#B8955C

accent

#A748E0

background

#F7F7FA

surface

#EDEEF5

border

#C8C9CF

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #284F90

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

Preview Lab → · Contrast checker → · Palette generator →