#243387#243387

#243387 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.5% C 0.141 H 270.1°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#243387
RGB	rgb(36, 51, 135)
HSL	hsl(231, 58%, 34%)
HSV	hsv(231, 73%, 53%)
CMYK	cmyk(73.3%, 62.2%, 0%, 47.1%)
CIE-LAB	lab(25.23, 24.44, -48.80)
CIE-LCH	lch(25.23, 54.57, 296.60°)
OKLab	oklab(36.5% 0.0003 -0.1408)
OKLCH	oklch(36.5% 0.141 270.1)
XYZ	xyz(6.2831, 4.4914, 23.4528)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243387 #877824

analogous

#246487 #243387 #462487

triadic

#243387 #872433 #338724

tetradic

#243387 #872464 #877824 #248746

square

#243387 #872464 #877824 #248746

split-complementary

#243387 #874624 #648724

monochromatic

#0A0E26 #172157 #243387 #3145B7 #5467D1

Accessibility & contrast

On white

11.06

#243387 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#243387 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243387

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243387	#FFFFFF	#000000	##FFFFFF
##243387	1.00	11.06	1.90	11.06
#FFFFFF	11.06	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418A

Deuteranopia (green-blind)

#003785

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #243387;
/* rgb */ color: rgb(36, 51, 135);
/* oklch */ color: oklch(36.5% 0.141 270.1);

Tailwind

colors: {
  custom: {
    50: '#6d6aab',
    500: '#243387',
    950: '#000000',
  },
}

SCSS

$custom: #243387;
$custom-light: #6d6aab;
$custom-dark: #000000;

JSON

{
  "hex": "#243387",
  "rgb": {
    "r": 36,
    "g": 51,
    "b": 135
  },
  "hsl": {
    "h": 230.909,
    "s": 57.895,
    "l": 33.529
  },
  "oklch": {
    "l": 0.36498,
    "c": 0.14082,
    "h": 270.1
  },
  "luminance": 0.04492
}

Semantic roles & 50–950 ramp

primary

#243387

secondary

#B5A651

accent

#CA47E1

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #243387

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

Preview Lab → · Contrast checker → · Palette generator →