#284EA4#284EA4

#284EA4 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.7% C 0.146 H 263.6°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#284EA4
RGB	rgb(40, 78, 164)
HSL	hsl(222, 61%, 40%)
HSV	hsv(222, 76%, 64%)
CMYK	cmyk(75.6%, 52.4%, 0%, 35.7%)
CIE-LAB	lab(35.16, 17.84, -50.38)
CIE-LCH	lch(35.16, 53.45, 289.50°)
OKLab	oklab(44.73% -0.0162 -0.145)
OKLCH	oklch(44.73% 0.146 263.6)
XYZ	xyz(10.2979, 8.5791, 36.2280)
Luminance	0.0858 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284EA4 #A47E28

analogous

#288CA4 #284EA4 #4028A4

triadic

#284EA4 #A4284E #4EA428

tetradic

#284EA4 #A4288C #A47E28 #28A440

square

#284EA4 #A4288C #A47E28 #28A440

split-complementary

#284EA4 #A44028 #8CA428

monochromatic

#101F42 #1C3773 #284EA4 #3A68CF #6B8EDB

Accessibility & contrast

On white

7.73

#284EA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#284EA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284EA4

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284EA4	#FFFFFF	#000000	##FFFFFF
##284EA4	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1559A7

Deuteranopia (green-blind)

#004DA2

Tritanopia (blue-blind)

#006371

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #284ea4;
/* rgb */ color: rgb(40, 78, 164);
/* oklch */ color: oklch(44.7% 0.146 263.6);

Tailwind

colors: {
  custom: {
    50: '#747fc0',
    500: '#284ea4',
    950: '#000000',
  },
}

SCSS

$custom: #284ea4;
$custom-light: #747fc0;
$custom-dark: #000000;

JSON

{
  "hex": "#284ea4",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 164
  },
  "hsl": {
    "h": 221.613,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.44728,
    "c": 0.14587,
    "h": 263.6
  },
  "luminance": 0.0858
}

Semantic roles & 50–950 ramp

primary

#284EA4

secondary

#C1A666

accent

#B344E4

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #284EA4

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

Preview Lab → · Contrast checker → · Palette generator →