#283C9C#283C9C

#283C9C is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.158 H 269.0°. Best body text is #FFFFFF at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#283C9C
RGB	rgb(40, 60, 156)
HSL	hsl(230, 59%, 38%)
HSV	hsv(230, 74%, 61%)
CMYK	cmyk(74.4%, 61.5%, 0%, 38.8%)
CIE-LAB	lab(29.62, 26.87, -54.56)
CIE-LCH	lch(29.62, 60.82, 296.22°)
OKLab	oklab(40.37% -0.0027 -0.1575)
OKLCH	oklch(40.37% 0.158 269)
XYZ	xyz(8.4896, 6.0822, 32.1726)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C9C #9C8828

analogous

#28769C #283C9C #4E289C

triadic

#283C9C #9C283C #3C9C28

tetradic

#283C9C #9C2876 #9C8828 #289C4E

square

#283C9C #9C2876 #9C8828 #289C4E

split-complementary

#283C9C #9C4E28 #769C28

monochromatic

#0F173B #1C296B #283C9C #3650CB #677AD8

Accessibility & contrast

On white

9.47

#283C9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#283C9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C9C

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C9C	#FFFFFF	#000000	##FFFFFF
##283C9C	1.00	9.47	2.22	9.47
#FFFFFF	9.47	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9F

Deuteranopia (green-blind)

#00419A

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #283c9c;
/* rgb */ color: rgb(40, 60, 156);
/* oklch */ color: oklch(40.4% 0.158 269.0);

Tailwind

colors: {
  custom: {
    50: '#7371ba',
    500: '#283c9c',
    950: '#000000',
  },
}

SCSS

$custom: #283c9c;
$custom-light: #7371ba;
$custom-dark: #000000;

JSON

{
  "hex": "#283c9c",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 156
  },
  "hsl": {
    "h": 229.655,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40366,
    "c": 0.15756,
    "h": 269
  },
  "luminance": 0.06083
}

Semantic roles & 50–950 ramp

primary

#283C9C

secondary

#BEAE62

accent

#C745E2

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #283C9C

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

Preview Lab → · Contrast checker → · Palette generator →