#284E90#284E90

#284E90 is a dark, moderate blue. Relative luminance 0.079; OKLCH L 43.3% C 0.117 H 260.6°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#284E90
RGB	rgb(40, 78, 144)
HSL	hsl(218, 57%, 36%)
HSV	hsv(218, 72%, 56%)
CMYK	cmyk(72.2%, 45.8%, 0%, 43.5%)
CIE-LAB	lab(33.80, 10.09, -40.49)
CIE-LCH	lch(33.80, 41.72, 283.99°)
OKLab	oklab(43.25% -0.0192 -0.1159)
OKLCH	oklch(43.25% 0.117 260.6)
XYZ	xyz(8.6317, 7.9126, 27.4525)
Luminance	0.0791 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284E90 #906A28

analogous

#288290 #284E90 #362890

triadic

#284E90 #90284E #4E9028

tetradic

#284E90 #902882 #906A28 #289036

square

#284E90 #902882 #906A28 #289036

split-complementary

#284E90 #903628 #829028

monochromatic

#0D1A30 #1B3460 #284E90 #3568C0 #608AD3

Accessibility & contrast

On white

8.13

#284E90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#284E90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284E90

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284E90	#FFFFFF	#000000	##FFFFFF
##284E90	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D5593

Deuteranopia (green-blind)

#194B8F

Tritanopia (blue-blind)

#005D68

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #284e90;
/* rgb */ color: rgb(40, 78, 144);
/* oklch */ color: oklch(43.3% 0.117 260.6);

Tailwind

colors: {
  custom: {
    50: '#6f7fb1',
    500: '#284e90',
    950: '#000000',
  },
}

SCSS

$custom: #284e90;
$custom-light: #6f7fb1;
$custom-dark: #000000;

JSON

{
  "hex": "#284e90",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 144
  },
  "hsl": {
    "h": 218.077,
    "s": 56.522,
    "l": 36.078
  },
  "oklch": {
    "l": 0.43251,
    "c": 0.11744,
    "h": 260.6
  },
  "luminance": 0.07914
}

Semantic roles & 50–950 ramp

primary

#284E90

secondary

#B8965C

accent

#A848E0

background

#F7F7FA

surface

#EDEEF5

border

#C8C9CF

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #284E90

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

Preview Lab → · Contrast checker → · Palette generator →