#283CAA#283CAA

#283CAA is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.6% C 0.176 H 269.0°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#283CAA
RGB	rgb(40, 60, 170)
HSL	hsl(231, 62%, 41%)
HSV	hsv(231, 76%, 67%)
CMYK	cmyk(76.5%, 64.7%, 0%, 33.3%)
CIE-LAB	lab(30.84, 32.11, -61.01)
CIE-LCH	lch(30.84, 68.94, 297.76°)
OKLab	oklab(41.65% -0.003 -0.1764)
OKLCH	oklch(41.65% 0.176 269)
XYZ	xyz(9.7441, 6.5840, 38.7797)
Luminance	0.0659 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283CAA #AA9628

analogous

#287DAA #283CAA #5528AA

triadic

#283CAA #AA283C #3CAA28

tetradic

#283CAA #AA287D #AA9628 #28AA55

square

#283CAA #AA287D #AA9628 #28AA55

split-complementary

#283CAA #AA5528 #7DAA28

monochromatic

#111947 #1C2B78 #283CAA #3E54D2 #6F80DD

Accessibility & contrast

On white

9.06

#283CAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#283CAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283CAA

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283CAA	#FFFFFF	#000000	##FFFFFF
##283CAA	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAE

Deuteranopia (green-blind)

#0043A8

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #283caa;
/* rgb */ color: rgb(40, 60, 170);
/* oklch */ color: oklch(41.6% 0.176 269.0);

Tailwind

colors: {
  custom: {
    50: '#7771c4',
    500: '#283caa',
    950: '#000000',
  },
}

SCSS

$custom: #283caa;
$custom-light: #7771c4;
$custom-dark: #000000;

JSON

{
  "hex": "#283caa",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 170
  },
  "hsl": {
    "h": 230.769,
    "s": 61.905,
    "l": 41.176
  },
  "oklch": {
    "l": 0.41646,
    "c": 0.17648,
    "h": 269
  },
  "luminance": 0.06585
}

Semantic roles & 50–950 ramp

primary

#283CAA

secondary

#C4B66A

accent

#CC43E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283CAA

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

Preview Lab → · Contrast checker → · Palette generator →