#283FDF#283FDF

#283FDF is a mid, highly saturated blue. Relative luminance 0.093; OKLCH L 47.4% C 0.239 H 267.9°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#283FDF
RGB	rgb(40, 63, 223)
HSL	hsl(232, 74%, 52%)
HSV	hsv(232, 82%, 87%)
CMYK	cmyk(82.1%, 71.7%, 0%, 12.5%)
CIE-LAB	lab(36.62, 49.10, -82.52)
CIE-LCH	lch(36.62, 96.02, 300.75°)
OKLab	oklab(47.37% -0.0087 -0.2392)
OKLCH	oklch(47.37% 0.239 267.9)
XYZ	xyz(15.9673, 9.3319, 70.7574)
Luminance	0.0933 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283FDF #DFC828

analogous

#289BDF #283FDF #6D28DF

triadic

#283FDF #DF283F #3FDF28

tetradic

#283FDF #DF289B #DFC828 #28DF6D

square

#283FDF #DF289B #DFC828 #28DF6D

split-complementary

#283FDF #DF6D28 #9BDF28

monochromatic

#121F7A #1A2DB0 #283FDF #5D6FE7 #939EEF

Accessibility & contrast

On white

7.33

#283FDF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#283FDF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283FDF

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283FDF	#FFFFFF	#000000	##FFFFFF
##283FDF	1.00	7.33	2.87	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FE4

Deuteranopia (green-blind)

#004DDC

Tritanopia (blue-blind)

#006D8B

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #283fdf;
/* rgb */ color: rgb(40, 63, 223);
/* oklch */ color: oklch(47.4% 0.239 267.9);

Tailwind

colors: {
  custom: {
    50: '#8475ea',
    500: '#283fdf',
    950: '#000000',
  },
}

SCSS

$custom: #283fdf;
$custom-light: #8475ea;
$custom-dark: #000000;

JSON

{
  "hex": "#283fdf",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 223
  },
  "hsl": {
    "h": 232.459,
    "s": 74.089,
    "l": 51.569
  },
  "oklch": {
    "l": 0.47371,
    "c": 0.23933,
    "h": 267.9
  },
  "luminance": 0.09334
}

Semantic roles & 50–950 ramp

primary

#283FDF

secondary

#DAD089

accent

#D937F1

background

#F9F7FE

surface

#F1EDFD

border

#CBC8D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #283FDF

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

Preview Lab → · Contrast checker → · Palette generator →