#284A88#284A88

#284A88 is a dark, moderate blue. Relative luminance 0.071; OKLCH L 41.8% C 0.111 H 261.3°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#284A88
RGB	rgb(40, 74, 136)
HSL	hsl(219, 55%, 35%)
HSV	hsv(219, 71%, 53%)
CMYK	cmyk(70.6%, 45.6%, 0%, 46.7%)
CIE-LAB	lab(32.09, 9.68, -38.32)
CIE-LCH	lch(32.09, 39.53, 284.17°)
OKLab	oklab(41.77% -0.0167 -0.1096)
OKLCH	oklch(41.77% 0.111 261.3)
XYZ	xyz(7.7662, 7.1255, 24.2538)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284A88 #886628

analogous

#287A88 #284A88 #362888

triadic

#284A88 #88284A #4A8828

tetradic

#284A88 #88287A #886628 #288836

square

#284A88 #88287A #886628 #288836

split-complementary

#284A88 #883628 #7A8828

monochromatic

#0C1729 #1A3059 #284A88 #3664B7 #5B84CF

Accessibility & contrast

On white

8.66

#284A88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#284A88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284A88

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284A88	#FFFFFF	#000000	##FFFFFF
##284A88	1.00	8.66	2.43	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C508A

Deuteranopia (green-blind)

#1A4787

Tritanopia (blue-blind)

#005862

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #284a88;
/* rgb */ color: rgb(40, 74, 136);
/* oklch */ color: oklch(41.8% 0.111 261.3);

Tailwind

colors: {
  custom: {
    50: '#6e7cab',
    500: '#284a88',
    950: '#000000',
  },
}

SCSS

$custom: #284a88;
$custom-light: #6e7cab;
$custom-dark: #000000;

JSON

{
  "hex": "#284a88",
  "rgb": {
    "r": 40,
    "g": 74,
    "b": 136
  },
  "hsl": {
    "h": 218.75,
    "s": 54.545,
    "l": 34.51
  },
  "oklch": {
    "l": 0.41768,
    "c": 0.11084,
    "h": 261.3
  },
  "luminance": 0.07126
}

Semantic roles & 50–950 ramp

primary

#284A88

secondary

#B49358

accent

#A94ADE

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #284A88

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

Preview Lab → · Contrast checker → · Palette generator →