#283488#283488

#283488 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.140 H 271.5°. Best body text is #FFFFFF at 10.84:1 contrast (WCAG AA passes).

Color values

HEX	#283488
RGB	rgb(40, 52, 136)
HSL	hsl(233, 55%, 35%)
HSV	hsv(233, 71%, 53%)
CMYK	cmyk(70.6%, 61.8%, 0%, 46.7%)
CIE-LAB	lab(25.81, 24.71, -48.46)
CIE-LCH	lch(25.81, 54.40, 297.02°)
OKLab	oklab(37.02% 0.0038 -0.1397)
OKLCH	oklch(37.02% 0.14 271.5)
XYZ	xyz(6.5455, 4.6840, 23.8469)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283488 #887C28

analogous

#286488 #283488 #4C2888

triadic

#283488 #882834 #348828

tetradic

#283488 #882864 #887C28 #28884C

square

#283488 #882864 #887C28 #28884C

split-complementary

#283488 #884C28 #648828

monochromatic

#0C1029 #1A2259 #283488 #3646B7 #5B6ACF

Accessibility & contrast

On white

10.84

#283488 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#283488 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283488

10.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283488	#FFFFFF	#000000	##FFFFFF
##283488	1.00	10.84	1.94	10.84
#FFFFFF	10.84	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428B

Deuteranopia (green-blind)

#003986

Tritanopia (blue-blind)

#004958

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283488;
/* rgb */ color: rgb(40, 52, 136);
/* oklch */ color: oklch(37.0% 0.140 271.5);

Tailwind

colors: {
  custom: {
    50: '#6f6bab',
    500: '#283488',
    950: '#000000',
  },
}

SCSS

$custom: #283488;
$custom-light: #6f6bab;
$custom-dark: #000000;

JSON

{
  "hex": "#283488",
  "rgb": {
    "r": 40,
    "g": 52,
    "b": 136
  },
  "hsl": {
    "h": 232.5,
    "s": 54.545,
    "l": 34.51
  },
  "oklch": {
    "l": 0.37018,
    "c": 0.13978,
    "h": 271.5
  },
  "luminance": 0.04685
}

Semantic roles & 50–950 ramp

primary

#283488

secondary

#B4A958

accent

#CB4ADE

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #283488

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

Preview Lab → · Contrast checker → · Palette generator →