#243B84#243B84

#243B84 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.9% C 0.126 H 267.0°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#243B84
RGB	rgb(36, 59, 132)
HSL	hsl(226, 57%, 33%)
HSV	hsv(226, 73%, 52%)
CMYK	cmyk(72.7%, 55.3%, 0%, 48.2%)
CIE-LAB	lab(27.21, 17.75, -43.71)
CIE-LCH	lch(27.21, 47.18, 292.10°)
OKLab	oklab(37.9% -0.0066 -0.1258)
OKLCH	oklch(37.9% 0.126 267)
XYZ	xyz(6.4549, 5.1683, 22.4827)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B84 #846D24

analogous

#246B84 #243B84 #3D2484

triadic

#243B84 #84243B #3B8424

tetradic

#243B84 #84246B #846D24 #24843D

square

#243B84 #84246B #846D24 #24843D

split-complementary

#243B84 #843D24 #6B8424

monochromatic

#0A1024 #172654 #243B84 #3150B4 #5271D0

Accessibility & contrast

On white

10.33

#243B84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#243B84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B84

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B84	#FFFFFF	#000000	##FFFFFF
##243B84	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#054587

Deuteranopia (green-blind)

#003C83

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243b84;
/* rgb */ color: rgb(36, 59, 132);
/* oklch */ color: oklch(37.9% 0.126 267.0);

Tailwind

colors: {
  custom: {
    50: '#6c70a8',
    500: '#243b84',
    950: '#000000',
  },
}

SCSS

$custom: #243b84;
$custom-light: #6c70a8;
$custom-dark: #000000;

JSON

{
  "hex": "#243b84",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 132
  },
  "hsl": {
    "h": 225.625,
    "s": 57.143,
    "l": 32.941
  },
  "oklch": {
    "l": 0.379,
    "c": 0.12594,
    "h": 267
  },
  "luminance": 0.05169
}

Semantic roles & 50–950 ramp

primary

#243B84

secondary

#B49C50

accent

#BC47E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #243B84

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

Preview Lab → · Contrast checker → · Palette generator →