#283B97#283B97

#283B97 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.152 H 269.3°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#283B97
RGB	rgb(40, 59, 151)
HSL	hsl(230, 58%, 37%)
HSV	hsv(230, 74%, 59%)
CMYK	cmyk(73.5%, 60.9%, 0%, 40.8%)
CIE-LAB	lab(28.93, 25.65, -52.63)
CIE-LCH	lch(28.93, 58.54, 295.98°)
OKLab	oklab(39.73% -0.0019 -0.1519)
OKLCH	oklch(39.73% 0.152 269.3)
XYZ	xyz(8.0230, 5.8126, 29.9713)
Luminance	0.0581 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283B97 #978428

analogous

#287297 #283B97 #4D2897

triadic

#283B97 #97283B #3B9728

tetradic

#283B97 #972872 #978428 #28974D

square

#283B97 #972872 #978428 #28974D

split-complementary

#283B97 #974D28 #729728

monochromatic

#0E1536 #1B2867 #283B97 #354EC7 #6477D6

Accessibility & contrast

On white

9.71

#283B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#283B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283B97

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283B97	#FFFFFF	#000000	##FFFFFF
##283B97	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499A

Deuteranopia (green-blind)

#003F95

Tritanopia (blue-blind)

#005263

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #283b97;
/* rgb */ color: rgb(40, 59, 151);
/* oklch */ color: oklch(39.7% 0.152 269.3);

Tailwind

colors: {
  custom: {
    50: '#7270b6',
    500: '#283b97',
    950: '#000000',
  },
}

SCSS

$custom: #283b97;
$custom-light: #7270b6;
$custom-dark: #000000;

JSON

{
  "hex": "#283b97",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 151
  },
  "hsl": {
    "h": 229.73,
    "s": 58.115,
    "l": 37.451
  },
  "oklch": {
    "l": 0.39727,
    "c": 0.15189,
    "h": 269.3
  },
  "luminance": 0.05813
}

Semantic roles & 50–950 ramp

primary

#283B97

secondary

#BCAC5F

accent

#C746E1

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #283B97

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

Preview Lab → · Contrast checker → · Palette generator →