#283380#283380

#283380 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.1% C 0.130 H 272.0°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#283380
RGB	rgb(40, 51, 128)
HSL	hsl(233, 52%, 33%)
HSV	hsv(233, 69%, 50%)
CMYK	cmyk(68.8%, 60.2%, 0%, 49.8%)
CIE-LAB	lab(24.88, 22.37, -44.98)
CIE-LCH	lch(24.88, 50.23, 296.44°)
OKLab	oklab(36.12% 0.0046 -0.1295)
OKLCH	oklch(36.12% 0.13 272)
XYZ	xyz(5.9539, 4.3767, 20.9489)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283380 #807528

analogous

#285F80 #283380 #492880

triadic

#283380 #802833 #338028

tetradic

#283380 #80285F #807528 #288049

square

#283380 #80285F #807528 #288049

split-complementary

#283380 #804928 #5F8028

monochromatic

#0B0E23 #192051 #283380 #3746AF #5866CB

Accessibility & contrast

On white

11.20

#283380 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#283380 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283380

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283380	#FFFFFF	#000000	##FFFFFF
##283380	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F83

Deuteranopia (green-blind)

#00377E

Tritanopia (blue-blind)

#004654

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283380;
/* rgb */ color: rgb(40, 51, 128);
/* oklch */ color: oklch(36.1% 0.130 272.0);

Tailwind

colors: {
  custom: {
    50: '#6d6aa5',
    500: '#283380',
    950: '#000000',
  },
}

SCSS

$custom: #283380;
$custom-light: #6d6aa5;
$custom-dark: #000000;

JSON

{
  "hex": "#283380",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 128
  },
  "hsl": {
    "h": 232.5,
    "s": 52.381,
    "l": 32.941
  },
  "oklch": {
    "l": 0.36115,
    "c": 0.12959,
    "h": 272
  },
  "luminance": 0.04377
}

Semantic roles & 50–950 ramp

primary

#283380

secondary

#B0A454

accent

#CA4CDC

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #283380

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

Preview Lab → · Contrast checker → · Palette generator →