#283899#283899

#283899 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.3% C 0.158 H 270.1°. Best body text is #FFFFFF at 9.93:1 contrast (WCAG AA passes).

Color values

HEX	#283899
RGB	rgb(40, 56, 153)
HSL	hsl(232, 59%, 38%)
HSV	hsv(232, 74%, 60%)
CMYK	cmyk(73.9%, 63.4%, 0%, 40%)
CIE-LAB	lab(28.32, 28.41, -54.85)
CIE-LCH	lch(28.32, 61.77, 297.39°)
OKLab	oklab(39.33% 0.0003 -0.1584)
OKLCH	oklch(39.33% 0.158 270.1)
XYZ	xyz(8.0370, 5.5785, 30.7840)
Luminance	0.0558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283899 #998928

analogous

#287199 #283899 #502899

triadic

#283899 #992838 #389928

tetradic

#283899 #992871 #998928 #289950

square

#283899 #992871 #998928 #289950

split-complementary

#283899 #995028 #719928

monochromatic

#0F1438 #1B2668 #283899 #354ACA #6575D7

Accessibility & contrast

On white

9.93

#283899 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#283899 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283899

9.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283899	#FFFFFF	#000000	##FFFFFF
##283899	1.00	9.93	2.12	9.93
#FFFFFF	9.93	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489C

Deuteranopia (green-blind)

#003E97

Tritanopia (blue-blind)

#005163

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #283899;
/* rgb */ color: rgb(40, 56, 153);
/* oklch */ color: oklch(39.3% 0.158 270.1);

Tailwind

colors: {
  custom: {
    50: '#736eb8',
    500: '#283899',
    950: '#000000',
  },
}

SCSS

$custom: #283899;
$custom-light: #736eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#283899",
  "rgb": {
    "r": 40,
    "g": 56,
    "b": 153
  },
  "hsl": {
    "h": 231.504,
    "s": 58.549,
    "l": 37.843
  },
  "oklch": {
    "l": 0.39327,
    "c": 0.15843,
    "h": 270.1
  },
  "luminance": 0.05579
}

Semantic roles & 50–950 ramp

primary

#283899

secondary

#BDAF60

accent

#CC46E2

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #283899

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

Preview Lab → · Contrast checker → · Palette generator →