#284FA2#284FA2

#284FA2 is a dark, vivid blue. Relative luminance 0.087; OKLCH L 44.8% C 0.142 H 263.0°. Best body text is #FFFFFF at 7.69:1 contrast (WCAG AA passes).

Color values

HEX	#284FA2
RGB	rgb(40, 79, 162)
HSL	hsl(221, 60%, 40%)
HSV	hsv(221, 75%, 64%)
CMYK	cmyk(75.3%, 51.2%, 0%, 36.5%)
CIE-LAB	lab(35.30, 16.40, -48.95)
CIE-LCH	lch(35.30, 51.63, 288.52°)
OKLab	oklab(44.79% -0.0173 -0.1407)
OKLCH	oklch(44.79% 0.142 263)
XYZ	xyz(10.1903, 8.6506, 35.3081)
Luminance	0.0865 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FA2 #A27B28

analogous

#288CA2 #284FA2 #3E28A2

triadic

#284FA2 #A2284F #4FA228

tetradic

#284FA2 #A2288C #A27B28 #28A23E

square

#284FA2 #A2288C #A27B28 #28A23E

split-complementary

#284FA2 #A23E28 #8CA228

monochromatic

#101F40 #1C3771 #284FA2 #3969CE #6A8EDA

Accessibility & contrast

On white

7.69

#284FA2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#284FA2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284FA2

7.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FA2	#FFFFFF	#000000	##FFFFFF
##284FA2	1.00	7.69	2.73	7.69
#FFFFFF	7.69	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C59A5

Deuteranopia (green-blind)

#004EA0

Tritanopia (blue-blind)

#006371

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #284fa2;
/* rgb */ color: rgb(40, 79, 162);
/* oklch */ color: oklch(44.8% 0.142 263.0);

Tailwind

colors: {
  custom: {
    50: '#737fbe',
    500: '#284fa2',
    950: '#000000',
  },
}

SCSS

$custom: #284fa2;
$custom-light: #737fbe;
$custom-dark: #000000;

JSON

{
  "hex": "#284fa2",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 162
  },
  "hsl": {
    "h": 220.82,
    "s": 60.396,
    "l": 39.608
  },
  "oklch": {
    "l": 0.4479,
    "c": 0.1418,
    "h": 263
  },
  "luminance": 0.08652
}

Semantic roles & 50–950 ramp

primary

#284FA2

secondary

#C1A365

accent

#B144E4

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #284FA2

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

Preview Lab → · Contrast checker → · Palette generator →