#283AA9#283AA9

#283AA9 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.2% C 0.178 H 269.4°. Best body text is #FFFFFF at 9.26:1 contrast (WCAG AA passes).

Color values

HEX	#283AA9
RGB	rgb(40, 58, 169)
HSL	hsl(232, 62%, 41%)
HSV	hsv(232, 76%, 66%)
CMYK	cmyk(76.3%, 65.7%, 0%, 33.7%)
CIE-LAB	lab(30.26, 33.04, -61.37)
CIE-LCH	lch(30.26, 69.70, 298.30°)
OKLab	oklab(41.19% -0.0017 -0.1775)
OKLCH	oklch(41.19% 0.178 269.4)
XYZ	xyz(9.5471, 6.3408, 38.2492)
Luminance	0.0634 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283AA9 #A99728

analogous

#287AA9 #283AA9 #5628A9

triadic

#283AA9 #A9283A #3AA928

tetradic

#283AA9 #A9287A #A99728 #28A956

square

#283AA9 #A9287A #A99728 #28A956

split-complementary

#283AA9 #A95628 #7AA928

monochromatic

#111846 #1C2978 #283AA9 #3D52D1 #6F7EDD

Accessibility & contrast

On white

9.26

#283AA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#283AA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283AA9

9.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283AA9	#FFFFFF	#000000	##FFFFFF
##283AA9	1.00	9.26	2.27	9.26
#FFFFFF	9.26	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAD

Deuteranopia (green-blind)

#0041A7

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #283aa9;
/* rgb */ color: rgb(40, 58, 169);
/* oklch */ color: oklch(41.2% 0.178 269.4);

Tailwind

colors: {
  custom: {
    50: '#7770c4',
    500: '#283aa9',
    950: '#000000',
  },
}

SCSS

$custom: #283aa9;
$custom-light: #7770c4;
$custom-dark: #000000;

JSON

{
  "hex": "#283aa9",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 169
  },
  "hsl": {
    "h": 231.628,
    "s": 61.722,
    "l": 40.98
  },
  "oklch": {
    "l": 0.41189,
    "c": 0.17752,
    "h": 269.4
  },
  "luminance": 0.06342
}

Semantic roles & 50–950 ramp

primary

#283AA9

secondary

#C4B769

accent

#CE43E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283AA9

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

Preview Lab → · Contrast checker → · Palette generator →