#284CA1#284CA1

#284CA1 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.1% C 0.144 H 264.1°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#284CA1
RGB	rgb(40, 76, 161)
HSL	hsl(222, 60%, 39%)
HSV	hsv(222, 75%, 63%)
CMYK	cmyk(75.2%, 52.8%, 0%, 36.9%)
CIE-LAB	lab(34.38, 18.02, -49.84)
CIE-LCH	lch(34.38, 53.00, 289.88°)
OKLab	oklab(44.07% -0.0149 -0.1434)
OKLCH	oklch(44.07% 0.144 264.1)
XYZ	xyz(9.8903, 8.1921, 34.7713)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284CA1 #A17D28

analogous

#2889A1 #284CA1 #4128A1

triadic

#284CA1 #A1284C #4CA128

tetradic

#284CA1 #A12889 #A17D28 #28A141

square

#284CA1 #A12889 #A17D28 #28A141

split-complementary

#284CA1 #A14128 #89A128

monochromatic

#101E3F #1C3570 #284CA1 #3965CE #6A8BDA

Accessibility & contrast

On white

7.96

#284CA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#284CA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284CA1

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284CA1	#FFFFFF	#000000	##FFFFFF
##284CA1	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1357A4

Deuteranopia (green-blind)

#004C9F

Tritanopia (blue-blind)

#00606F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #284ca1;
/* rgb */ color: rgb(40, 76, 161);
/* oklch */ color: oklch(44.1% 0.144 264.1);

Tailwind

colors: {
  custom: {
    50: '#737dbd',
    500: '#284ca1',
    950: '#000000',
  },
}

SCSS

$custom: #284ca1;
$custom-light: #737dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#284ca1",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 161
  },
  "hsl": {
    "h": 222.149,
    "s": 60.199,
    "l": 39.412
  },
  "oklch": {
    "l": 0.44065,
    "c": 0.1442,
    "h": 264.1
  },
  "luminance": 0.08193
}

Semantic roles & 50–950 ramp

primary

#284CA1

secondary

#C0A565

accent

#B444E3

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284CA1

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

Preview Lab → · Contrast checker → · Palette generator →