#284C97#284C97

#284C97 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.3% C 0.130 H 262.9°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#284C97
RGB	rgb(40, 76, 151)
HSL	hsl(221, 58%, 37%)
HSV	hsv(221, 74%, 59%)
CMYK	cmyk(73.5%, 49.7%, 0%, 40.8%)
CIE-LAB	lab(33.68, 14.14, -44.94)
CIE-LCH	lch(33.68, 47.12, 287.47°)
OKLab	oklab(43.3% -0.0161 -0.129)
OKLCH	oklch(43.3% 0.13 262.9)
XYZ	xyz(9.0434, 7.8534, 30.3114)
Luminance	0.0785 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284C97 #977328

analogous

#288397 #284C97 #3C2897

triadic

#284C97 #97284C #4C9728

tetradic

#284C97 #972883 #977328 #28973C

square

#284C97 #972883 #977328 #28973C

split-complementary

#284C97 #973C28 #839728

monochromatic

#0E1B36 #1B3467 #284C97 #3564C7 #6489D6

Accessibility & contrast

On white

8.17

#284C97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#284C97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284C97

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284C97	#FFFFFF	#000000	##FFFFFF
##284C97	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22559A

Deuteranopia (green-blind)

#004A95

Tritanopia (blue-blind)

#005E6A

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #284c97;
/* rgb */ color: rgb(40, 76, 151);
/* oklch */ color: oklch(43.3% 0.130 262.9);

Tailwind

colors: {
  custom: {
    50: '#717db6',
    500: '#284c97',
    950: '#000000',
  },
}

SCSS

$custom: #284c97;
$custom-light: #717db6;
$custom-dark: #000000;

JSON

{
  "hex": "#284c97",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 151
  },
  "hsl": {
    "h": 220.541,
    "s": 58.115,
    "l": 37.451
  },
  "oklch": {
    "l": 0.43304,
    "c": 0.13001,
    "h": 262.9
  },
  "luminance": 0.07854
}

Semantic roles & 50–950 ramp

primary

#284C97

secondary

#BC9E5F

accent

#AF46E1

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #284C97

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

Preview Lab → · Contrast checker → · Palette generator →