#283499#283499

#283499 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.6% C 0.163 H 271.1°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#283499
RGB	rgb(40, 52, 153)
HSL	hsl(234, 59%, 38%)
HSV	hsv(234, 74%, 60%)
CMYK	cmyk(73.9%, 66%, 0%, 40%)
CIE-LAB	lab(27.31, 31.05, -56.50)
CIE-LCH	lch(27.31, 64.47, 298.79°)
OKLab	oklab(38.59% 0.0031 -0.1633)
OKLCH	oklch(38.59% 0.163 271.1)
XYZ	xyz(7.8509, 5.2062, 30.7220)
Luminance	0.0521 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283499 #998D28

analogous

#286D99 #283499 #542899

triadic

#283499 #992834 #349928

tetradic

#283499 #99286D #998D28 #289954

square

#283499 #99286D #998D28 #289954

split-complementary

#283499 #995428 #6D9928

monochromatic

#0F1338 #1B2468 #283499 #3544CA #6571D7

Accessibility & contrast

On white

10.29

#283499 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#283499 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283499

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283499	#FFFFFF	#000000	##FFFFFF
##283499	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469C

Deuteranopia (green-blind)

#003B97

Tritanopia (blue-blind)

#004F61

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #283499;
/* rgb */ color: rgb(40, 52, 153);
/* oklch */ color: oklch(38.6% 0.163 271.1);

Tailwind

colors: {
  custom: {
    50: '#736bb8',
    500: '#283499',
    950: '#000000',
  },
}

SCSS

$custom: #283499;
$custom-light: #736bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#283499",
  "rgb": {
    "r": 40,
    "g": 52,
    "b": 153
  },
  "hsl": {
    "h": 233.628,
    "s": 58.549,
    "l": 37.843
  },
  "oklch": {
    "l": 0.38586,
    "c": 0.16333,
    "h": 271.1
  },
  "luminance": 0.05207
}

Semantic roles & 50–950 ramp

primary

#283499

secondary

#BDB360

accent

#D146E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #283499

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

Preview Lab → · Contrast checker → · Palette generator →