#284F9C#284F9C

#284F9C is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.3% C 0.133 H 262.2°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#284F9C
RGB	rgb(40, 79, 156)
HSL	hsl(220, 59%, 38%)
HSV	hsv(220, 74%, 61%)
CMYK	cmyk(74.4%, 49.4%, 0%, 38.8%)
CIE-LAB	lab(34.89, 14.07, -46.01)
CIE-LCH	lch(34.89, 48.12, 287.00°)
OKLab	oklab(44.34% -0.0181 -0.1321)
OKLCH	oklch(44.34% 0.133 262.2)
XYZ	xyz(9.6697, 8.4423, 32.5660)
Luminance	0.0844 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284F9C #9C7528

analogous

#28899C #284F9C #3B289C

triadic

#284F9C #9C284F #4F9C28

tetradic

#284F9C #9C2889 #9C7528 #289C3B

square

#284F9C #9C2889 #9C7528 #289C3B

split-complementary

#284F9C #9C3B28 #899C28

monochromatic

#0F1E3B #1C366B #284F9C #3668CB #678DD8

Accessibility & contrast

On white

7.81

#284F9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#284F9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284F9C

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284F9C	#FFFFFF	#000000	##FFFFFF
##284F9C	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24589F

Deuteranopia (green-blind)

#004D9A

Tritanopia (blue-blind)

#00616E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #284f9c;
/* rgb */ color: rgb(40, 79, 156);
/* oklch */ color: oklch(44.3% 0.133 262.2);

Tailwind

colors: {
  custom: {
    50: '#727fba',
    500: '#284f9c',
    950: '#000000',
  },
}

SCSS

$custom: #284f9c;
$custom-light: #727fba;
$custom-dark: #000000;

JSON

{
  "hex": "#284f9c",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 156
  },
  "hsl": {
    "h": 219.828,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.44341,
    "c": 0.13334,
    "h": 262.2
  },
  "luminance": 0.08443
}

Semantic roles & 50–950 ramp

primary

#284F9C

secondary

#BE9F62

accent

#AE45E2

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #284F9C

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

Preview Lab → · Contrast checker → · Palette generator →