#284F98#284F98

#284F98 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.0% C 0.128 H 261.6°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#284F98
RGB	rgb(40, 79, 152)
HSL	hsl(219, 58%, 38%)
HSV	hsv(219, 74%, 60%)
CMYK	cmyk(73.7%, 48%, 0%, 40.4%)
CIE-LAB	lab(34.62, 12.52, -44.03)
CIE-LCH	lch(34.62, 45.78, 285.87°)
OKLab	oklab(44.05% -0.0187 -0.1263)
OKLCH	oklch(44.05% 0.128 261.6)
XYZ	xyz(9.3365, 8.3091, 30.8114)
Luminance	0.0831 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284F98 #987128

analogous

#288798 #284F98 #392898

triadic

#284F98 #98284F #4F9828

tetradic

#284F98 #982887 #987128 #289839

square

#284F98 #982887 #987128 #289839

split-complementary

#284F98 #983928 #879828

monochromatic

#0F1D37 #1B3668 #284F98 #3568C8 #648CD6

Accessibility & contrast

On white

7.89

#284F98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#284F98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284F98

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284F98	#FFFFFF	#000000	##FFFFFF
##284F98	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28579B

Deuteranopia (green-blind)

#0B4D97

Tritanopia (blue-blind)

#00606C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #284f98;
/* rgb */ color: rgb(40, 79, 152);
/* oklch */ color: oklch(44.0% 0.128 261.6);

Tailwind

colors: {
  custom: {
    50: '#717fb7',
    500: '#284f98',
    950: '#000000',
  },
}

SCSS

$custom: #284f98;
$custom-light: #717fb7;
$custom-dark: #000000;

JSON

{
  "hex": "#284f98",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 152
  },
  "hsl": {
    "h": 219.107,
    "s": 58.333,
    "l": 37.647
  },
  "oklch": {
    "l": 0.44048,
    "c": 0.12766,
    "h": 261.6
  },
  "luminance": 0.0831
}

Semantic roles & 50–950 ramp

primary

#284F98

secondary

#BC9C60

accent

#AB46E2

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #284F98

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

Preview Lab → · Contrast checker → · Palette generator →