#243371#243371

#243371 is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.6% C 0.108 H 269.7°. Best body text is #FFFFFF at 11.75:1 contrast (WCAG AA passes).

Color values

HEX	#243371
RGB	rgb(36, 51, 113)
HSL	hsl(228, 52%, 29%)
HSV	hsv(228, 68%, 44%)
CMYK	cmyk(68.1%, 54.9%, 0%, 55.7%)
CIE-LAB	lab(23.45, 15.92, -37.78)
CIE-LCH	lch(23.45, 41.00, 292.84°)
OKLab	oklab(34.61% -0.0006 -0.1084)
OKLCH	oklch(34.61% 0.108 269.7)
XYZ	xyz(4.8910, 3.9345, 16.1213)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243371 #716224

analogous

#245A71 #243371 #3C2471

triadic

#243371 #712433 #337124

tetradic

#243371 #71245A #716224 #24713C

square

#243371 #71245A #716224 #24713C

split-complementary

#243371 #713C24 #5A7124

monochromatic

#070A17 #151E43 #243371 #33489F #4A62C5

Accessibility & contrast

On white

11.75

#243371 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#243371 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243371

11.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243371	#FFFFFF	#000000	##FFFFFF
##243371	1.00	11.75	1.79	11.75
#FFFFFF	11.75	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C3B73

Deuteranopia (green-blind)

#003570

Tritanopia (blue-blind)

#00424C

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #243371;
/* rgb */ color: rgb(36, 51, 113);
/* oklch */ color: oklch(34.6% 0.108 269.7);

Tailwind

colors: {
  custom: {
    50: '#686a9a',
    500: '#243371',
    950: '#000000',
  },
}

SCSS

$custom: #243371;
$custom-light: #686a9a;
$custom-dark: #000000;

JSON

{
  "hex": "#243371",
  "rgb": {
    "r": 36,
    "g": 51,
    "b": 113
  },
  "hsl": {
    "h": 228.312,
    "s": 51.678,
    "l": 29.216
  },
  "oklch": {
    "l": 0.34607,
    "c": 0.10844,
    "h": 269.7
  },
  "luminance": 0.03935
}

Semantic roles & 50–950 ramp

primary

#243371

secondary

#A4934D

accent

#BF4DDB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060E

muted

#7A7A7E

Preview Lab

Preview with #243371

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

Preview Lab → · Contrast checker → · Palette generator →