#283AAF#283AAF

#283AAF is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.185 H 269.3°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#283AAF
RGB	rgb(40, 58, 175)
HSL	hsl(232, 63%, 42%)
HSV	hsv(232, 77%, 69%)
CMYK	cmyk(77.1%, 66.9%, 0%, 31.4%)
CIE-LAB	lab(30.81, 35.24, -64.05)
CIE-LCH	lch(30.81, 73.10, 298.82°)
OKLab	oklab(41.76% -0.0021 -0.1853)
OKLCH	oklch(41.76% 0.185 269.3)
XYZ	xyz(10.1233, 6.5713, 41.2840)
Luminance	0.0657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.44

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283AAF #AF9D28

analogous

#287EAF #283AAF #5A28AF

triadic

#283AAF #AF283A #3AAF28

tetradic

#283AAF #AF287E #AF9D28 #28AF5A

square

#283AAF #AF287E #AF9D28 #28AF5A

split-complementary

#283AAF #AF5A28 #7EAF28

monochromatic

#11194B #1D297D #283AAF #4154D4 #7381DF

Accessibility & contrast

On white

9.07

#283AAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#283AAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283AAF

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283AAF	#FFFFFF	#000000	##FFFFFF
##283AAF	1.00	9.07	2.31	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB3

Deuteranopia (green-blind)

#0042AD

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #283aaf;
/* rgb */ color: rgb(40, 58, 175);
/* oklch */ color: oklch(41.8% 0.185 269.3);

Tailwind

colors: {
  custom: {
    50: '#7870c8',
    500: '#283aaf',
    950: '#000000',
  },
}

SCSS

$custom: #283aaf;
$custom-light: #7870c8;
$custom-dark: #000000;

JSON

{
  "hex": "#283aaf",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 175
  },
  "hsl": {
    "h": 232,
    "s": 62.791,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41763,
    "c": 0.18536,
    "h": 269.3
  },
  "luminance": 0.06572
}

Semantic roles & 50–950 ramp

primary

#283AAF

secondary

#C6BA6D

accent

#D042E6

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283AAF

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

Preview Lab → · Contrast checker → · Palette generator →