#283F94#283F94

#283F94 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.3% C 0.143 H 267.9°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#283F94
RGB	rgb(40, 63, 148)
HSL	hsl(227, 57%, 37%)
HSV	hsv(227, 73%, 58%)
CMYK	cmyk(73%, 57.4%, 0%, 42%)
CIE-LAB	lab(29.77, 21.80, -49.43)
CIE-LCH	lch(29.77, 54.02, 293.79°)
OKLab	oklab(40.28% -0.0052 -0.1424)
OKLCH	oklch(40.28% 0.143 267.9)
XYZ	xyz(7.9960, 6.1434, 28.7756)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F94 #947D28

analogous

#287594 #283F94 #472894

triadic

#283F94 #94283F #3F9428

tetradic

#283F94 #942875 #947D28 #289447

square

#283F94 #942875 #947D28 #289447

split-complementary

#283F94 #944728 #759428

monochromatic

#0E1634 #1B2A64 #283F94 #3554C4 #627AD5

Accessibility & contrast

On white

9.42

#283F94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#283F94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F94

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F94	#FFFFFF	#000000	##FFFFFF
##283F94	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B97

Deuteranopia (green-blind)

#004192

Tritanopia (blue-blind)

#005463

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #283f94;
/* rgb */ color: rgb(40, 63, 148);
/* oklch */ color: oklch(40.3% 0.143 267.9);

Tailwind

colors: {
  custom: {
    50: '#7173b4',
    500: '#283f94',
    950: '#000000',
  },
}

SCSS

$custom: #283f94;
$custom-light: #7173b4;
$custom-dark: #000000;

JSON

{
  "hex": "#283f94",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 148
  },
  "hsl": {
    "h": 227.222,
    "s": 57.447,
    "l": 36.863
  },
  "oklch": {
    "l": 0.40276,
    "c": 0.14253,
    "h": 267.9
  },
  "luminance": 0.06144
}

Semantic roles & 50–950 ramp

primary

#283F94

secondary

#BAA65E

accent

#C047E1

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #283F94

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

Preview Lab → · Contrast checker → · Palette generator →