#283597#283597

#283597 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.6% C 0.159 H 270.9°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#283597
RGB	rgb(40, 53, 151)
HSL	hsl(233, 58%, 37%)
HSV	hsv(233, 74%, 59%)
CMYK	cmyk(73.5%, 64.9%, 0%, 40.8%)
CIE-LAB	lab(27.38, 29.66, -55.16)
CIE-LCH	lch(27.38, 62.63, 298.26°)
OKLab	oklab(38.58% 0.0025 -0.1594)
OKLCH	oklch(38.58% 0.159 270.9)
XYZ	xyz(7.7322, 5.2309, 29.8743)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283597 #978A28

analogous

#286C97 #283597 #532897

triadic

#283597 #972835 #359728

tetradic

#283597 #97286C #978A28 #289753

square

#283597 #97286C #978A28 #289753

split-complementary

#283597 #975328 #6C9728

monochromatic

#0E1336 #1B2467 #283597 #3546C7 #6471D6

Accessibility & contrast

On white

10.26

#283597 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#283597 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283597

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283597	#FFFFFF	#000000	##FFFFFF
##283597	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469A

Deuteranopia (green-blind)

#003C95

Tritanopia (blue-blind)

#004E61

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #283597;
/* rgb */ color: rgb(40, 53, 151);
/* oklch */ color: oklch(38.6% 0.159 270.9);

Tailwind

colors: {
  custom: {
    50: '#736cb6',
    500: '#283597',
    950: '#000000',
  },
}

SCSS

$custom: #283597;
$custom-light: #736cb6;
$custom-dark: #000000;

JSON

{
  "hex": "#283597",
  "rgb": {
    "r": 40,
    "g": 53,
    "b": 151
  },
  "hsl": {
    "h": 232.973,
    "s": 58.115,
    "l": 37.451
  },
  "oklch": {
    "l": 0.3858,
    "c": 0.1594,
    "h": 270.9
  },
  "luminance": 0.05232
}

Semantic roles & 50–950 ramp

primary

#283597

secondary

#BCB15F

accent

#CF46E1

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #283597

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

Preview Lab → · Contrast checker → · Palette generator →