#283099#283099

#283099 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.9% C 0.168 H 271.9°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#283099
RGB	rgb(40, 48, 153)
HSL	hsl(236, 59%, 38%)
HSV	hsv(236, 74%, 60%)
CMYK	cmyk(73.9%, 68.6%, 0%, 40%)
CIE-LAB	lab(26.34, 33.64, -58.09)
CIE-LCH	lch(26.34, 67.13, 300.08°)
OKLab	oklab(37.88% 0.0057 -0.168)
OKLCH	oklch(37.88% 0.168 271.9)
XYZ	xyz(7.6799, 4.8641, 30.6649)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283099 #999128

analogous

#286899 #283099 #582899

triadic

#283099 #992830 #309928

tetradic

#283099 #992868 #999128 #289958

square

#283099 #992868 #999128 #289958

split-complementary

#283099 #995828 #689928

monochromatic

#0F1238 #1B2168 #283099 #353FCA #656DD7

Accessibility & contrast

On white

10.64

#283099 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#283099 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283099

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283099	#FFFFFF	#000000	##FFFFFF
##283099	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449C

Deuteranopia (green-blind)

#003997

Tritanopia (blue-blind)

#004C60

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283099;
/* rgb */ color: rgb(40, 48, 153);
/* oklch */ color: oklch(37.9% 0.168 271.9);

Tailwind

colors: {
  custom: {
    50: '#7468b8',
    500: '#283099',
    950: '#000000',
  },
}

SCSS

$custom: #283099;
$custom-light: #7468b8;
$custom-dark: #000000;

JSON

{
  "hex": "#283099",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 153
  },
  "hsl": {
    "h": 235.752,
    "s": 58.549,
    "l": 37.843
  },
  "oklch": {
    "l": 0.37879,
    "c": 0.16807,
    "h": 271.9
  },
  "luminance": 0.04865
}

Semantic roles & 50–950 ramp

primary

#283099

secondary

#BDB660

accent

#D746E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #283099

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

Preview Lab → · Contrast checker → · Palette generator →