#243C97#243C97

#243C97 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.152 H 267.6°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#243C97
RGB	rgb(36, 60, 151)
HSL	hsl(227, 61%, 37%)
HSV	hsv(227, 76%, 59%)
CMYK	cmyk(76.2%, 60.3%, 0%, 40.8%)
CIE-LAB	lab(29.01, 24.47, -52.52)
CIE-LCH	lch(29.01, 57.94, 294.98°)
OKLab	oklab(39.73% -0.0065 -0.1516)
OKLCH	oklch(39.73% 0.152 267.6)
XYZ	xyz(7.9274, 5.8403, 29.9817)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C97 #977F24

analogous

#247697 #243C97 #462497

triadic

#243C97 #97243C #3C9724

tetradic

#243C97 #972476 #977F24 #249746

square

#243C97 #972476 #977F24 #249746

split-complementary

#243C97 #974624 #769724

monochromatic

#0C1534 #182866 #243C97 #3050C8 #5D77D8

Accessibility & contrast

On white

9.69

#243C97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#243C97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C97

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C97	#FFFFFF	#000000	##FFFFFF
##243C97	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9A

Deuteranopia (green-blind)

#003F95

Tritanopia (blue-blind)

#005363

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #243c97;
/* rgb */ color: rgb(36, 60, 151);
/* oklch */ color: oklch(39.7% 0.152 267.6);

Tailwind

colors: {
  custom: {
    50: '#7171b6',
    500: '#243c97',
    950: '#000000',
  },
}

SCSS

$custom: #243c97;
$custom-light: #7171b6;
$custom-dark: #000000;

JSON

{
  "hex": "#243c97",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 151
  },
  "hsl": {
    "h": 227.478,
    "s": 61.497,
    "l": 36.667
  },
  "oklch": {
    "l": 0.39726,
    "c": 0.15178,
    "h": 267.6
  },
  "luminance": 0.05841
}

Semantic roles & 50–950 ramp

primary

#243C97

secondary

#BDA85A

accent

#C343E5

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #243C97

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

Preview Lab → · Contrast checker → · Palette generator →