#283E97#283E97

#283E97 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.3% C 0.148 H 268.4°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#283E97
RGB	rgb(40, 62, 151)
HSL	hsl(228, 58%, 37%)
HSV	hsv(228, 74%, 59%)
CMYK	cmyk(73.5%, 58.9%, 0%, 40.8%)
CIE-LAB	lab(29.74, 23.62, -51.32)
CIE-LCH	lch(29.74, 56.49, 294.72°)
OKLab	oklab(40.33% -0.0042 -0.148)
OKLCH	oklch(40.33% 0.148 268.4)
XYZ	xyz(8.1817, 6.1299, 30.0242)
Luminance	0.0613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283E97 #978128

analogous

#287697 #283E97 #492897

triadic

#283E97 #97283E #3E9728

tetradic

#283E97 #972876 #978128 #289749

square

#283E97 #972876 #978128 #289749

split-complementary

#283E97 #974928 #769728

monochromatic

#0E1636 #1B2A67 #283E97 #3552C7 #647AD6

Accessibility & contrast

On white

9.43

#283E97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#283E97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283E97

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283E97	#FFFFFF	#000000	##FFFFFF
##283E97	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9A

Deuteranopia (green-blind)

#004195

Tritanopia (blue-blind)

#005464

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #283e97;
/* rgb */ color: rgb(40, 62, 151);
/* oklch */ color: oklch(40.3% 0.148 268.4);

Tailwind

colors: {
  custom: {
    50: '#7273b6',
    500: '#283e97',
    950: '#000000',
  },
}

SCSS

$custom: #283e97;
$custom-light: #7273b6;
$custom-dark: #000000;

JSON

{
  "hex": "#283e97",
  "rgb": {
    "r": 40,
    "g": 62,
    "b": 151
  },
  "hsl": {
    "h": 228.108,
    "s": 58.115,
    "l": 37.451
  },
  "oklch": {
    "l": 0.40325,
    "c": 0.14806,
    "h": 268.4
  },
  "luminance": 0.06131
}

Semantic roles & 50–950 ramp

primary

#283E97

secondary

#BCA95F

accent

#C346E1

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #283E97

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

Preview Lab → · Contrast checker → · Palette generator →