#283AAC#283AAC

#283AAC is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.5% C 0.181 H 269.4°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#283AAC
RGB	rgb(40, 58, 172)
HSL	hsl(232, 62%, 42%)
HSV	hsv(232, 77%, 67%)
CMYK	cmyk(76.7%, 66.3%, 0%, 32.5%)
CIE-LAB	lab(30.53, 34.15, -62.71)
CIE-LCH	lch(30.53, 71.41, 298.57°)
OKLab	oklab(41.48% -0.0019 -0.1814)
OKLCH	oklch(41.48% 0.181 269.4)
XYZ	xyz(9.8320, 6.4547, 39.7494)
Luminance	0.0646 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.75

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283AAC #AC9A28

analogous

#287CAC #283AAC #5828AC

triadic

#283AAC #AC283A #3AAC28

tetradic

#283AAC #AC287C #AC9A28 #28AC58

square

#283AAC #AC287C #AC9A28 #28AC58

split-complementary

#283AAC #AC5828 #7CAC28

monochromatic

#111949 #1C297A #283AAC #3F53D2 #717FDE

Accessibility & contrast

On white

9.17

#283AAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#283AAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283AAC

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283AAC	#FFFFFF	#000000	##FFFFFF
##283AAC	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB0

Deuteranopia (green-blind)

#0042AA

Tritanopia (blue-blind)

#00586E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #283aac;
/* rgb */ color: rgb(40, 58, 172);
/* oklch */ color: oklch(41.5% 0.181 269.4);

Tailwind

colors: {
  custom: {
    50: '#7770c6',
    500: '#283aac',
    950: '#000000',
  },
}

SCSS

$custom: #283aac;
$custom-light: #7770c6;
$custom-dark: #000000;

JSON

{
  "hex": "#283aac",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 172
  },
  "hsl": {
    "h": 231.818,
    "s": 62.264,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41475,
    "c": 0.18146,
    "h": 269.4
  },
  "luminance": 0.06456
}

Semantic roles & 50–950 ramp

primary

#283AAC

secondary

#C5B96B

accent

#CF42E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283AAC

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

Preview Lab → · Contrast checker → · Palette generator →