#283CAC#283CAC

#283CAC is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.179 H 269.0°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#283CAC
RGB	rgb(40, 60, 172)
HSL	hsl(231, 62%, 42%)
HSV	hsv(231, 77%, 67%)
CMYK	cmyk(76.7%, 65.1%, 0%, 32.5%)
CIE-LAB	lab(31.02, 32.85, -61.91)
CIE-LCH	lch(31.02, 70.09, 297.95°)
OKLab	oklab(41.83% -0.0031 -0.1791)
OKLCH	oklch(41.83% 0.179 269)
XYZ	xyz(9.9348, 6.6603, 39.7837)
Luminance	0.0666 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283CAC #AC9828

analogous

#287EAC #283CAC #5628AC

triadic

#283CAC #AC283C #3CAC28

tetradic

#283CAC #AC287E #AC9828 #28AC56

square

#283CAC #AC287E #AC9828 #28AC56

split-complementary

#283CAC #AC5628 #7EAC28

monochromatic

#111949 #1C2B7A #283CAC #3F55D2 #7181DE

Accessibility & contrast

On white

9.00

#283CAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#283CAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283CAC

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283CAC	#FFFFFF	#000000	##FFFFFF
##283CAC	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB0

Deuteranopia (green-blind)

#0043AA

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #283cac;
/* rgb */ color: rgb(40, 60, 172);
/* oklch */ color: oklch(41.8% 0.179 269.0);

Tailwind

colors: {
  custom: {
    50: '#7771c6',
    500: '#283cac',
    950: '#000000',
  },
}

SCSS

$custom: #283cac;
$custom-light: #7771c6;
$custom-dark: #000000;

JSON

{
  "hex": "#283cac",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 172
  },
  "hsl": {
    "h": 230.909,
    "s": 62.264,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41833,
    "c": 0.17912,
    "h": 269
  },
  "luminance": 0.06661
}

Semantic roles & 50–950 ramp

primary

#283CAC

secondary

#C5B76B

accent

#CD42E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283CAC

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

Preview Lab → · Contrast checker → · Palette generator →