#283BAE#283BAE

#283BAE is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.183 H 269.2°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#283BAE
RGB	rgb(40, 59, 174)
HSL	hsl(231, 63%, 42%)
HSV	hsv(231, 77%, 68%)
CMYK	cmyk(77%, 66.1%, 0%, 31.8%)
CIE-LAB	lab(30.96, 34.23, -63.21)
CIE-LCH	lch(30.96, 71.88, 298.44°)
OKLab	oklab(41.84% -0.0026 -0.1829)
OKLCH	oklch(41.84% 0.183 269.2)
XYZ	xyz(10.0764, 6.6339, 40.7856)
Luminance	0.0664 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283BAE #AE9B28

analogous

#287EAE #283BAE #5828AE

triadic

#283BAE #AE283B #3BAE28

tetradic

#283BAE #AE287E #AE9B28 #28AE58

square

#283BAE #AE287E #AE9B28 #28AE58

split-complementary

#283BAE #AE5828 #7EAE28

monochromatic

#11194A #1D2A7C #283BAE #4055D3 #7281DF

Accessibility & contrast

On white

9.02

#283BAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#283BAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283BAE

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283BAE	#FFFFFF	#000000	##FFFFFF
##283BAE	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB2

Deuteranopia (green-blind)

#0043AC

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #283bae;
/* rgb */ color: rgb(40, 59, 174);
/* oklch */ color: oklch(41.8% 0.183 269.2);

Tailwind

colors: {
  custom: {
    50: '#7871c7',
    500: '#283bae',
    950: '#000000',
  },
}

SCSS

$custom: #283bae;
$custom-light: #7871c7;
$custom-dark: #000000;

JSON

{
  "hex": "#283bae",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 174
  },
  "hsl": {
    "h": 231.493,
    "s": 62.617,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41844,
    "c": 0.18291,
    "h": 269.2
  },
  "luminance": 0.06635
}

Semantic roles & 50–950 ramp

primary

#283BAE

secondary

#C6B96C

accent

#CE42E6

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283BAE

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

Preview Lab → · Contrast checker → · Palette generator →