#283DAC#283DAC

#283DAC is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.0% C 0.178 H 268.8°. Best body text is #FFFFFF at 8.92:1 contrast (WCAG AA passes).

Color values

HEX	#283DAC
RGB	rgb(40, 61, 172)
HSL	hsl(230, 62%, 42%)
HSV	hsv(230, 77%, 67%)
CMYK	cmyk(76.7%, 64.5%, 0%, 32.5%)
CIE-LAB	lab(31.27, 32.20, -61.50)
CIE-LCH	lch(31.27, 69.42, 297.64°)
OKLab	oklab(42.02% -0.0037 -0.1779)
OKLCH	oklch(42.02% 0.178 268.8)
XYZ	xyz(9.9876, 6.7661, 39.8013)
Luminance	0.0677 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283DAC #AC9728

analogous

#287FAC #283DAC #5528AC

triadic

#283DAC #AC283D #3DAC28

tetradic

#283DAC #AC287F #AC9728 #28AC55

square

#283DAC #AC287F #AC9728 #28AC55

split-complementary

#283DAC #AC5528 #7FAC28

monochromatic

#111A49 #1C2B7A #283DAC #3F56D2 #7182DE

Accessibility & contrast

On white

8.92

#283DAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#283DAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283DAC

8.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283DAC	#FFFFFF	#000000	##FFFFFF
##283DAC	1.00	8.92	2.35	8.92
#FFFFFF	8.92	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B0

Deuteranopia (green-blind)

#0043AA

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #283dac;
/* rgb */ color: rgb(40, 61, 172);
/* oklch */ color: oklch(42.0% 0.178 268.8);

Tailwind

colors: {
  custom: {
    50: '#7772c6',
    500: '#283dac',
    950: '#000000',
  },
}

SCSS

$custom: #283dac;
$custom-light: #7772c6;
$custom-dark: #000000;

JSON

{
  "hex": "#283dac",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 172
  },
  "hsl": {
    "h": 230.455,
    "s": 62.264,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42015,
    "c": 0.17793,
    "h": 268.8
  },
  "luminance": 0.06767
}

Semantic roles & 50–950 ramp

primary

#283DAC

secondary

#C5B76B

accent

#CB42E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #283DAC

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

Preview Lab → · Contrast checker → · Palette generator →