#283A90#283A90

#283A90 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.9% C 0.143 H 269.5°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#283A90
RGB	rgb(40, 58, 144)
HSL	hsl(230, 57%, 36%)
HSV	hsv(230, 72%, 56%)
CMYK	cmyk(72.2%, 59.7%, 0%, 43.5%)
CIE-LAB	lab(28.09, 23.66, -49.71)
CIE-LCH	lch(28.09, 55.06, 295.46°)
OKLab	oklab(38.92% -0.0012 -0.1433)
OKLCH	oklch(38.92% 0.143 269.5)
XYZ	xyz(7.4204, 5.4901, 27.0488)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A90 #907E28

analogous

#286E90 #283A90 #4A2890

triadic

#283A90 #90283A #3A9028

tetradic

#283A90 #90286E #907E28 #28904A

square

#283A90 #90286E #907E28 #28904A

split-complementary

#283A90 #904A28 #6E9028

monochromatic

#0D1330 #1B2760 #283A90 #354DC0 #6074D3

Accessibility & contrast

On white

10.01

#283A90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#283A90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A90

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A90	#FFFFFF	#000000	##FFFFFF
##283A90	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004793

Deuteranopia (green-blind)

#003E8E

Tritanopia (blue-blind)

#004F5F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #283a90;
/* rgb */ color: rgb(40, 58, 144);
/* oklch */ color: oklch(38.9% 0.143 269.5);

Tailwind

colors: {
  custom: {
    50: '#716fb1',
    500: '#283a90',
    950: '#000000',
  },
}

SCSS

$custom: #283a90;
$custom-light: #716fb1;
$custom-dark: #000000;

JSON

{
  "hex": "#283a90",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 144
  },
  "hsl": {
    "h": 229.615,
    "s": 56.522,
    "l": 36.078
  },
  "oklch": {
    "l": 0.38915,
    "c": 0.14334,
    "h": 269.5
  },
  "luminance": 0.05491
}

Semantic roles & 50–950 ramp

primary

#283A90

secondary

#B8A85C

accent

#C648E0

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #283A90

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

Preview Lab → · Contrast checker → · Palette generator →