#243A99#243A99

#243A99 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.5% C 0.157 H 268.2°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#243A99
RGB	rgb(36, 58, 153)
HSL	hsl(229, 62%, 37%)
HSV	hsv(229, 76%, 60%)
CMYK	cmyk(76.5%, 62.1%, 0%, 40%)
CIE-LAB	lab(28.64, 26.59, -54.33)
CIE-LCH	lch(28.64, 60.49, 296.08°)
OKLab	oklab(39.51% -0.005 -0.157)
OKLCH	oklch(39.51% 0.157 268.2)
XYZ	xyz(7.9884, 5.7002, 30.8101)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A99 #998324

analogous

#247599 #243A99 #492499

triadic

#243A99 #99243A #3A9924

tetradic

#243A99 #992475 #998324 #249949

square

#243A99 #992475 #998324 #249949

split-complementary

#243A99 #994924 #759924

monochromatic

#0D1436 #182767 #243A99 #304DCB #5E75D9

Accessibility & contrast

On white

9.81

#243A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#243A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A99

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A99	#FFFFFF	#000000	##FFFFFF
##243A99	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499C

Deuteranopia (green-blind)

#003E97

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #243a99;
/* rgb */ color: rgb(36, 58, 153);
/* oklch */ color: oklch(39.5% 0.157 268.2);

Tailwind

colors: {
  custom: {
    50: '#7170b8',
    500: '#243a99',
    950: '#000000',
  },
}

SCSS

$custom: #243a99;
$custom-light: #7170b8;
$custom-dark: #000000;

JSON

{
  "hex": "#243a99",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 153
  },
  "hsl": {
    "h": 228.718,
    "s": 61.905,
    "l": 37.059
  },
  "oklch": {
    "l": 0.39509,
    "c": 0.15706,
    "h": 268.2
  },
  "luminance": 0.05701
}

Semantic roles & 50–950 ramp

primary

#243A99

secondary

#BEAB5B

accent

#C643E5

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #243A99

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

Preview Lab → · Contrast checker → · Palette generator →