#283D9C#283D9C

#283D9C is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.156 H 268.8°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#283D9C
RGB	rgb(40, 61, 156)
HSL	hsl(229, 59%, 38%)
HSV	hsv(229, 74%, 61%)
CMYK	cmyk(74.4%, 60.9%, 0%, 38.8%)
CIE-LAB	lab(29.88, 26.20, -54.13)
CIE-LCH	lch(29.88, 60.14, 295.83°)
OKLab	oklab(40.56% -0.0034 -0.1563)
OKLCH	oklch(40.56% 0.156 268.8)
XYZ	xyz(8.5425, 6.1880, 32.1902)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D9C #9C8728

analogous

#28779C #283D9C #4D289C

triadic

#283D9C #9C283D #3D9C28

tetradic

#283D9C #9C2877 #9C8728 #289C4D

square

#283D9C #9C2877 #9C8728 #289C4D

split-complementary

#283D9C #9C4D28 #779C28

monochromatic

#0F173B #1C2A6B #283D9C #3651CB #677BD8

Accessibility & contrast

On white

9.38

#283D9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#283D9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D9C

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D9C	#FFFFFF	#000000	##FFFFFF
##283D9C	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9F

Deuteranopia (green-blind)

#00419A

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #283d9c;
/* rgb */ color: rgb(40, 61, 156);
/* oklch */ color: oklch(40.6% 0.156 268.8);

Tailwind

colors: {
  custom: {
    50: '#7372ba',
    500: '#283d9c',
    950: '#000000',
  },
}

SCSS

$custom: #283d9c;
$custom-light: #7372ba;
$custom-dark: #000000;

JSON

{
  "hex": "#283d9c",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 156
  },
  "hsl": {
    "h": 229.138,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40561,
    "c": 0.1563,
    "h": 268.8
  },
  "luminance": 0.06189
}

Semantic roles & 50–950 ramp

primary

#283D9C

secondary

#BEAD62

accent

#C645E2

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #283D9C

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

Preview Lab → · Contrast checker → · Palette generator →