#283A85#283A85

#283A85 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.127 H 269.3°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#283A85
RGB	rgb(40, 58, 133)
HSL	hsl(228, 54%, 34%)
HSV	hsv(228, 70%, 52%)
CMYK	cmyk(69.9%, 56.4%, 0%, 47.8%)
CIE-LAB	lab(27.21, 19.46, -44.32)
CIE-LCH	lch(27.21, 48.40, 293.70°)
OKLab	oklab(37.99% -0.0016 -0.1275)
OKLCH	oklch(37.99% 0.127 269.3)
XYZ	xyz(6.6203, 5.1700, 22.8348)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A85 #857328

analogous

#286985 #283A85 #452885

triadic

#283A85 #85283A #3A8528

tetradic

#283A85 #852869 #857328 #288545

square

#283A85 #852869 #857328 #288545

split-complementary

#283A85 #854528 #698528

monochromatic

#0C1127 #1A2556 #283A85 #364FB4 #5A70CD

Accessibility & contrast

On white

10.32

#283A85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#283A85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A85

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A85	#FFFFFF	#000000	##FFFFFF
##283A85	1.00	10.32	2.03	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004588

Deuteranopia (green-blind)

#003C83

Tritanopia (blue-blind)

#004C59

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #283a85;
/* rgb */ color: rgb(40, 58, 133);
/* oklch */ color: oklch(38.0% 0.127 269.3);

Tailwind

colors: {
  custom: {
    50: '#6e6fa9',
    500: '#283a85',
    950: '#000000',
  },
}

SCSS

$custom: #283a85;
$custom-light: #6e6fa9;
$custom-dark: #000000;

JSON

{
  "hex": "#283a85",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 133
  },
  "hsl": {
    "h": 228.387,
    "s": 53.757,
    "l": 33.922
  },
  "oklch": {
    "l": 0.37986,
    "c": 0.12749,
    "h": 269.3
  },
  "luminance": 0.05171
}

Semantic roles & 50–950 ramp

primary

#283A85

secondary

#B3A156

accent

#C14BDD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283A85

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

Preview Lab → · Contrast checker → · Palette generator →