#283F96#283F96

#283F96 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.4% C 0.145 H 268.0°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#283F96
RGB	rgb(40, 63, 150)
HSL	hsl(227, 58%, 37%)
HSV	hsv(227, 73%, 59%)
CMYK	cmyk(73.3%, 58%, 0%, 41.2%)
CIE-LAB	lab(29.93, 22.56, -50.40)
CIE-LCH	lch(29.93, 55.22, 294.12°)
OKLab	oklab(40.44% -0.0051 -0.1453)
OKLCH	oklch(40.44% 0.145 268)
XYZ	xyz(8.1557, 6.2073, 29.6166)
Luminance	0.0621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F96 #967F28

analogous

#287696 #283F96 #482896

triadic

#283F96 #96283F #3F9628

tetradic

#283F96 #962876 #967F28 #289648

square

#283F96 #962876 #967F28 #289648

split-complementary

#283F96 #964828 #769628

monochromatic

#0E1635 #1B2B66 #283F96 #3553C6 #637BD5

Accessibility & contrast

On white

9.37

#283F96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#283F96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F96

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F96	#FFFFFF	#000000	##FFFFFF
##283F96	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C99

Deuteranopia (green-blind)

#004294

Tritanopia (blue-blind)

#005464

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #283f96;
/* rgb */ color: rgb(40, 63, 150);
/* oklch */ color: oklch(40.4% 0.145 268.0);

Tailwind

colors: {
  custom: {
    50: '#7273b6',
    500: '#283f96',
    950: '#000000',
  },
}

SCSS

$custom: #283f96;
$custom-light: #7273b6;
$custom-dark: #000000;

JSON

{
  "hex": "#283f96",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 150
  },
  "hsl": {
    "h": 227.455,
    "s": 57.895,
    "l": 37.255
  },
  "oklch": {
    "l": 0.40444,
    "c": 0.14536,
    "h": 268
  },
  "luminance": 0.06208
}

Semantic roles & 50–950 ramp

primary

#283F96

secondary

#BBA85F

accent

#C147E1

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #283F96

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

Preview Lab → · Contrast checker → · Palette generator →