#283AA0#283AA0

#283AA0 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.3% C 0.166 H 269.5°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#283AA0
RGB	rgb(40, 58, 160)
HSL	hsl(231, 60%, 39%)
HSV	hsv(231, 75%, 63%)
CMYK	cmyk(75%, 63.8%, 0%, 37.3%)
CIE-LAB	lab(29.45, 29.70, -57.26)
CIE-LCH	lch(29.45, 64.51, 297.42°)
OKLab	oklab(40.35% -0.0013 -0.1655)
OKLCH	oklch(40.35% 0.166 269.5)
XYZ	xyz(8.7311, 6.0144, 33.9516)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283AA0 #A08E28

analogous

#2876A0 #283AA0 #5228A0

triadic

#283AA0 #A0283A #3AA028

tetradic

#283AA0 #A02876 #A08E28 #28A052

square

#283AA0 #A02876 #A08E28 #28A052

split-complementary

#283AA0 #A05228 #76A028

monochromatic

#10173E #1C286F #283AA0 #384ECD #697AD9

Accessibility & contrast

On white

9.53

#283AA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#283AA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283AA0

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283AA0	#FFFFFF	#000000	##FFFFFF
##283AA0	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA3

Deuteranopia (green-blind)

#00409E

Tritanopia (blue-blind)

#005467

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #283aa0;
/* rgb */ color: rgb(40, 58, 160);
/* oklch */ color: oklch(40.3% 0.166 269.5);

Tailwind

colors: {
  custom: {
    50: '#7470bd',
    500: '#283aa0',
    950: '#000000',
  },
}

SCSS

$custom: #283aa0;
$custom-light: #7470bd;
$custom-dark: #000000;

JSON

{
  "hex": "#283aa0",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 160
  },
  "hsl": {
    "h": 231,
    "s": 60,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40347,
    "c": 0.1655,
    "h": 269.5
  },
  "luminance": 0.06015
}

Semantic roles & 50–950 ramp

primary

#283AA0

secondary

#C0B264

accent

#CB45E3

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #283AA0

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

Preview Lab → · Contrast checker → · Palette generator →