#283C9A#283C9A

#283C9A is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.155 H 269.0°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#283C9A
RGB	rgb(40, 60, 154)
HSL	hsl(229, 59%, 38%)
HSV	hsv(229, 74%, 60%)
CMYK	cmyk(74%, 61%, 0%, 39.6%)
CIE-LAB	lab(29.45, 26.11, -53.62)
CIE-LCH	lch(29.45, 59.64, 295.97°)
OKLab	oklab(40.19% -0.0026 -0.1548)
OKLCH	oklch(40.19% 0.155 269)
XYZ	xyz(8.3217, 6.0151, 31.2880)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C9A #9A8628

analogous

#28759A #283C9A #4D289A

triadic

#283C9A #9A283C #3C9A28

tetradic

#283C9A #9A2875 #9A8628 #289A4D

square

#283C9A #9A2875 #9A8628 #289A4D

split-complementary

#283C9A #9A4D28 #759A28

monochromatic

#0F1639 #1B2969 #283C9A #354FCA #6579D7

Accessibility & contrast

On white

9.53

#283C9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#283C9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C9A

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C9A	#FFFFFF	#000000	##FFFFFF
##283C9A	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9D

Deuteranopia (green-blind)

#004098

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #283c9a;
/* rgb */ color: rgb(40, 60, 154);
/* oklch */ color: oklch(40.2% 0.155 269.0);

Tailwind

colors: {
  custom: {
    50: '#7371b9',
    500: '#283c9a',
    950: '#000000',
  },
}

SCSS

$custom: #283c9a;
$custom-light: #7371b9;
$custom-dark: #000000;

JSON

{
  "hex": "#283c9a",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 154
  },
  "hsl": {
    "h": 229.474,
    "s": 58.763,
    "l": 38.039
  },
  "oklch": {
    "l": 0.40189,
    "c": 0.15479,
    "h": 269
  },
  "luminance": 0.06016
}

Semantic roles & 50–950 ramp

primary

#283C9A

secondary

#BDAD61

accent

#C746E2

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #283C9A

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

Preview Lab → · Contrast checker → · Palette generator →