#284B87#284B87

#284B87 is a dark, moderate blue. Relative luminance 0.072; OKLCH L 41.9% C 0.108 H 260.4°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#284B87
RGB	rgb(40, 75, 135)
HSL	hsl(218, 54%, 34%)
HSV	hsv(218, 70%, 53%)
CMYK	cmyk(70.4%, 44.4%, 0%, 47.1%)
CIE-LAB	lab(32.33, 8.62, -37.33)
CIE-LCH	lch(32.33, 38.31, 283.01°)
OKLab	oklab(41.93% -0.0179 -0.1066)
OKLCH	oklch(41.93% 0.108 260.4)
XYZ	xyz(7.7628, 7.2318, 23.9037)
Luminance	0.0723 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284B87 #876428

analogous

#287B87 #284B87 #352887

triadic

#284B87 #87284B #4B8728

tetradic

#284B87 #87287B #876428 #288735

square

#284B87 #87287B #876428 #288735

split-complementary

#284B87 #873528 #7B8728

monochromatic

#0C1729 #1A3158 #284B87 #3665B6 #5B86CE

Accessibility & contrast

On white

8.58

#284B87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#284B87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284B87

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284B87	#FFFFFF	#000000	##FFFFFF
##284B87	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E5189

Deuteranopia (green-blind)

#1E4886

Tritanopia (blue-blind)

#005962

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #284b87;
/* rgb */ color: rgb(40, 75, 135);
/* oklch */ color: oklch(41.9% 0.108 260.4);

Tailwind

colors: {
  custom: {
    50: '#6e7caa',
    500: '#284b87',
    950: '#000000',
  },
}

SCSS

$custom: #284b87;
$custom-light: #6e7caa;
$custom-dark: #000000;

JSON

{
  "hex": "#284b87",
  "rgb": {
    "r": 40,
    "g": 75,
    "b": 135
  },
  "hsl": {
    "h": 217.895,
    "s": 54.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.41931,
    "c": 0.10813,
    "h": 260.4
  },
  "luminance": 0.07233
}

Semantic roles & 50–950 ramp

primary

#284B87

secondary

#B49257

accent

#A74ADE

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #284B87

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

Preview Lab → · Contrast checker → · Palette generator →