#283AAB#283AAB

#283AAB is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.4% C 0.180 H 269.4°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#283AAB
RGB	rgb(40, 58, 171)
HSL	hsl(232, 62%, 41%)
HSV	hsv(232, 77%, 67%)
CMYK	cmyk(76.6%, 66.1%, 0%, 32.9%)
CIE-LAB	lab(30.44, 33.78, -62.27)
CIE-LCH	lch(30.44, 70.84, 298.48°)
OKLab	oklab(41.38% -0.0019 -0.1801)
OKLCH	oklch(41.38% 0.18 269.4)
XYZ	xyz(9.7363, 6.4164, 39.2455)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.86

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283AAB #AB9928

analogous

#287CAB #283AAB #5828AB

triadic

#283AAB #AB283A #3AAB28

tetradic

#283AAB #AB287C #AB9928 #28AB58

square

#283AAB #AB287C #AB9928 #28AB58

split-complementary

#283AAB #AB5828 #7CAB28

monochromatic

#111848 #1C2979 #283AAB #3E53D2 #707FDE

Accessibility & contrast

On white

9.20

#283AAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#283AAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283AAB

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283AAB	#FFFFFF	#000000	##FFFFFF
##283AAB	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAF

Deuteranopia (green-blind)

#0042A9

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #283aab;
/* rgb */ color: rgb(40, 58, 171);
/* oklch */ color: oklch(41.4% 0.180 269.4);

Tailwind

colors: {
  custom: {
    50: '#7770c5',
    500: '#283aab',
    950: '#000000',
  },
}

SCSS

$custom: #283aab;
$custom-light: #7770c5;
$custom-dark: #000000;

JSON

{
  "hex": "#283aab",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 171
  },
  "hsl": {
    "h": 231.756,
    "s": 62.085,
    "l": 41.373
  },
  "oklch": {
    "l": 0.4138,
    "c": 0.18015,
    "h": 269.4
  },
  "luminance": 0.06418
}

Semantic roles & 50–950 ramp

primary

#283AAB

secondary

#C4B86A

accent

#CF43E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283AAB

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

Preview Lab → · Contrast checker → · Palette generator →