#243399#243399

#243399 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.2% C 0.166 H 269.8°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#243399
RGB	rgb(36, 51, 153)
HSL	hsl(232, 62%, 37%)
HSV	hsv(232, 76%, 60%)
CMYK	cmyk(76.5%, 66.7%, 0%, 40%)
CIE-LAB	lab(26.85, 31.25, -57.26)
CIE-LCH	lch(26.85, 65.23, 298.63°)
OKLab	oklab(38.19% -0.0005 -0.1656)
OKLCH	oklch(38.19% 0.166 269.8)
XYZ	xyz(7.6592, 5.0418, 30.7003)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243399 #998A24

analogous

#246D99 #243399 #502499

triadic

#243399 #992433 #339924

tetradic

#243399 #99246D #998A24 #249950

square

#243399 #99246D #998A24 #249950

split-complementary

#243399 #995024 #6D9924

monochromatic

#0D1236 #182267 #243399 #3044CB #5E6ED9

Accessibility & contrast

On white

10.46

#243399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#243399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243399

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243399	#FFFFFF	#000000	##FFFFFF
##243399	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459C

Deuteranopia (green-blind)

#003A97

Tritanopia (blue-blind)

#004E61

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243399;
/* rgb */ color: rgb(36, 51, 153);
/* oklch */ color: oklch(38.2% 0.166 269.8);

Tailwind

colors: {
  custom: {
    50: '#726ab8',
    500: '#243399',
    950: '#000000',
  },
}

SCSS

$custom: #243399;
$custom-light: #726ab8;
$custom-dark: #000000;

JSON

{
  "hex": "#243399",
  "rgb": {
    "r": 36,
    "g": 51,
    "b": 153
  },
  "hsl": {
    "h": 232.308,
    "s": 61.905,
    "l": 37.059
  },
  "oklch": {
    "l": 0.38191,
    "c": 0.16563,
    "h": 269.8
  },
  "luminance": 0.05043
}

Semantic roles & 50–950 ramp

primary

#243399

secondary

#BEB15B

accent

#D043E5

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #243399

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

Preview Lab → · Contrast checker → · Palette generator →