#284C87#284C87

#284C87 is a dark, moderate blue. Relative luminance 0.074; OKLCH L 42.2% C 0.107 H 259.8°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#284C87
RGB	rgb(40, 76, 135)
HSL	hsl(217, 54%, 34%)
HSV	hsv(217, 70%, 53%)
CMYK	cmyk(70.4%, 43.7%, 0%, 47.1%)
CIE-LAB	lab(32.63, 7.95, -36.84)
CIE-LCH	lch(32.63, 37.69, 282.18°)
OKLab	oklab(42.17% -0.019 -0.1052)
OKLCH	oklch(42.17% 0.107 259.8)
XYZ	xyz(7.8311, 7.3685, 23.9265)
Luminance	0.0737 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284C87 #876328

analogous

#287C87 #284C87 #332887

triadic

#284C87 #87284C #4C8728

tetradic

#284C87 #87287C #876328 #288733

square

#284C87 #87287C #876328 #288733

split-complementary

#284C87 #873328 #7C8728

monochromatic

#0C1729 #1A3158 #284C87 #3667B6 #5B87CE

Accessibility & contrast

On white

8.49

#284C87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#284C87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284C87

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284C87	#FFFFFF	#000000	##FFFFFF
##284C87	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#305189

Deuteranopia (green-blind)

#204986

Tritanopia (blue-blind)

#005A63

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #284c87;
/* rgb */ color: rgb(40, 76, 135);
/* oklch */ color: oklch(42.2% 0.107 259.8);

Tailwind

colors: {
  custom: {
    50: '#6e7daa',
    500: '#284c87',
    950: '#000000',
  },
}

SCSS

$custom: #284c87;
$custom-light: #6e7daa;
$custom-dark: #000000;

JSON

{
  "hex": "#284c87",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 135
  },
  "hsl": {
    "h": 217.263,
    "s": 54.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.42165,
    "c": 0.10689,
    "h": 259.8
  },
  "luminance": 0.07369
}

Semantic roles & 50–950 ramp

primary

#284C87

secondary

#B49157

accent

#A64ADE

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #284C87

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

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