#283BAD#283BAD

#283BAD is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.182 H 269.2°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#283BAD
RGB	rgb(40, 59, 173)
HSL	hsl(231, 62%, 42%)
HSV	hsv(231, 77%, 68%)
CMYK	cmyk(76.9%, 65.9%, 0%, 32.2%)
CIE-LAB	lab(30.87, 33.87, -62.76)
CIE-LCH	lch(30.87, 71.32, 298.35°)
OKLab	oklab(41.75% -0.0026 -0.1816)
OKLCH	oklch(41.75% 0.182 269.2)
XYZ	xyz(9.9793, 6.5951, 40.2741)
Luminance	0.0660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283BAD #AD9A28

analogous

#287DAD #283BAD #5828AD

triadic

#283BAD #AD283B #3BAD28

tetradic

#283BAD #AD287D #AD9A28 #28AD58

square

#283BAD #AD287D #AD9A28 #28AD58

split-complementary

#283BAD #AD5828 #7DAD28

monochromatic

#11194A #1D2A7B #283BAD #3F55D3 #7181DE

Accessibility & contrast

On white

9.05

#283BAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#283BAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283BAD

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283BAD	#FFFFFF	#000000	##FFFFFF
##283BAD	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB1

Deuteranopia (green-blind)

#0042AB

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #283bad;
/* rgb */ color: rgb(40, 59, 173);
/* oklch */ color: oklch(41.7% 0.182 269.2);

Tailwind

colors: {
  custom: {
    50: '#7871c6',
    500: '#283bad',
    950: '#000000',
  },
}

SCSS

$custom: #283bad;
$custom-light: #7871c6;
$custom-dark: #000000;

JSON

{
  "hex": "#283bad",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 173
  },
  "hsl": {
    "h": 231.429,
    "s": 62.441,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41748,
    "c": 0.1816,
    "h": 269.2
  },
  "luminance": 0.06596
}

Semantic roles & 50–950 ramp

primary

#283BAD

secondary

#C5B86C

accent

#CE42E6

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283BAD

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

Preview Lab → · Contrast checker → · Palette generator →