#284B89#284B89

#284B89 is a dark, moderate blue. Relative luminance 0.073; OKLCH L 42.1% C 0.111 H 260.9°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#284B89
RGB	rgb(40, 75, 137)
HSL	hsl(218, 55%, 35%)
HSV	hsv(218, 71%, 54%)
CMYK	cmyk(70.8%, 45.3%, 0%, 46.3%)
CIE-LAB	lab(32.46, 9.39, -38.35)
CIE-LCH	lch(32.46, 39.49, 283.76°)
OKLab	oklab(42.07% -0.0175 -0.1096)
OKLCH	oklch(42.07% 0.111 260.9)
XYZ	xyz(7.9049, 7.2886, 24.6523)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284B89 #896628

analogous

#287B89 #284B89 #362889

triadic

#284B89 #89284B #4B8928

tetradic

#284B89 #89287B #896628 #288936

square

#284B89 #89287B #896628 #288936

split-complementary

#284B89 #893628 #7B8928

monochromatic

#0C172A #1A315A #284B89 #3665B8 #5C86CF

Accessibility & contrast

On white

8.54

#284B89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#284B89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284B89

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284B89	#FFFFFF	#000000	##FFFFFF
##284B89	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D518B

Deuteranopia (green-blind)

#1C4888

Tritanopia (blue-blind)

#005963

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #284b89;
/* rgb */ color: rgb(40, 75, 137);
/* oklch */ color: oklch(42.1% 0.111 260.9);

Tailwind

colors: {
  custom: {
    50: '#6e7cac',
    500: '#284b89',
    950: '#000000',
  },
}

SCSS

$custom: #284b89;
$custom-light: #6e7cac;
$custom-dark: #000000;

JSON

{
  "hex": "#284b89",
  "rgb": {
    "r": 40,
    "g": 75,
    "b": 137
  },
  "hsl": {
    "h": 218.351,
    "s": 54.802,
    "l": 34.706
  },
  "oklch": {
    "l": 0.42069,
    "c": 0.11105,
    "h": 260.9
  },
  "luminance": 0.07289
}

Semantic roles & 50–950 ramp

primary

#284B89

secondary

#B59358

accent

#A94ADE

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #284B89

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

Preview Lab → · Contrast checker → · Palette generator →