#284583#284583

#284583 is a dark, moderate blue. Relative luminance 0.063; OKLCH L 40.3% C 0.110 H 263.4°. Best body text is #FFFFFF at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#284583
RGB	rgb(40, 69, 131)
HSL	hsl(221, 53%, 34%)
HSV	hsv(221, 69%, 51%)
CMYK	cmyk(69.5%, 47.3%, 0%, 48.6%)
CIE-LAB	lab(30.27, 11.13, -38.15)
CIE-LCH	lch(30.27, 39.74, 286.27°)
OKLab	oklab(40.26% -0.0126 -0.1092)
OKLCH	oklch(40.26% 0.11 263.4)
XYZ	xyz(7.0985, 6.3454, 22.3190)
Luminance	0.0635 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284583 #836628

analogous

#287283 #284583 #382883

triadic

#284583 #832845 #458328

tetradic

#284583 #832872 #836628 #288338

square

#284583 #832872 #836628 #288338

split-complementary

#284583 #833828 #728328

monochromatic

#0B1425 #1A2C54 #284583 #365EB2 #597ECC

Accessibility & contrast

On white

9.25

#284583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#284583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284583

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284583	#FFFFFF	#000000	##FFFFFF
##284583	1.00	9.25	2.27	9.25
#FFFFFF	9.25	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264C85

Deuteranopia (green-blind)

#154382

Tritanopia (blue-blind)

#00535D

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #284583;
/* rgb */ color: rgb(40, 69, 131);
/* oklch */ color: oklch(40.3% 0.110 263.4);

Tailwind

colors: {
  custom: {
    50: '#6d78a7',
    500: '#284583',
    950: '#000000',
  },
}

SCSS

$custom: #284583;
$custom-light: #6d78a7;
$custom-dark: #000000;

JSON

{
  "hex": "#284583",
  "rgb": {
    "r": 40,
    "g": 69,
    "b": 131
  },
  "hsl": {
    "h": 220.879,
    "s": 53.216,
    "l": 33.529
  },
  "oklch": {
    "l": 0.40261,
    "c": 0.10988,
    "h": 263.4
  },
  "luminance": 0.06346
}

Semantic roles & 50–950 ramp

primary

#284583

secondary

#B19455

accent

#AE4BDD

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #284583

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

Preview Lab → · Contrast checker → · Palette generator →