#283CAE#283CAE

#283CAE is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.0% C 0.182 H 269.0°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#283CAE
RGB	rgb(40, 60, 174)
HSL	hsl(231, 63%, 42%)
HSV	hsv(231, 77%, 68%)
CMYK	cmyk(77%, 65.5%, 0%, 31.8%)
CIE-LAB	lab(31.20, 33.59, -62.81)
CIE-LCH	lch(31.20, 71.23, 298.14°)
OKLab	oklab(42.02% -0.0032 -0.1817)
OKLCH	oklch(42.02% 0.182 269)
XYZ	xyz(10.1283, 6.7377, 40.8029)
Luminance	0.0674 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283CAE #AE9A28

analogous

#287FAE #283CAE #5728AE

triadic

#283CAE #AE283C #3CAE28

tetradic

#283CAE #AE287F #AE9A28 #28AE57

square

#283CAE #AE287F #AE9A28 #28AE57

split-complementary

#283CAE #AE5728 #7FAE28

monochromatic

#111A4A #1D2B7C #283CAE #4056D3 #7282DF

Accessibility & contrast

On white

8.94

#283CAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#283CAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283CAE

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283CAE	#FFFFFF	#000000	##FFFFFF
##283CAE	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B2

Deuteranopia (green-blind)

#0043AC

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #283cae;
/* rgb */ color: rgb(40, 60, 174);
/* oklch */ color: oklch(42.0% 0.182 269.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#283cae",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 174
  },
  "hsl": {
    "h": 231.045,
    "s": 62.617,
    "l": 41.961
  },
  "oklch": {
    "l": 0.42022,
    "c": 0.18174,
    "h": 269
  },
  "luminance": 0.06739
}

Semantic roles & 50–950 ramp

primary

#283CAE

secondary

#C6B86C

accent

#CD42E6

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283CAE

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

Preview Lab → · Contrast checker → · Palette generator →