#243B82#243B82

#243B82 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.7% C 0.123 H 266.8°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#243B82
RGB	rgb(36, 59, 130)
HSL	hsl(225, 57%, 33%)
HSV	hsv(225, 72%, 51%)
CMYK	cmyk(72.3%, 54.6%, 0%, 49%)
CIE-LAB	lab(27.06, 16.97, -42.71)
CIE-LCH	lch(27.06, 45.96, 291.66°)
OKLab	oklab(37.74% -0.0068 -0.1228)
OKLCH	oklch(37.74% 0.123 266.8)
XYZ	xyz(6.3194, 5.1141, 21.7688)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B82 #826B24

analogous

#246A82 #243B82 #3C2482

triadic

#243B82 #82243B #3B8224

tetradic

#243B82 #82246A #826B24 #24823C

square

#243B82 #82246A #826B24 #24823C

split-complementary

#243B82 #823C24 #6A8224

monochromatic

#090F22 #172552 #243B82 #3151B2 #5170CF

Accessibility & contrast

On white

10.38

#243B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#243B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B82

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B82	#FFFFFF	#000000	##FFFFFF
##243B82	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A4485

Deuteranopia (green-blind)

#003C81

Tritanopia (blue-blind)

#004C58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243b82;
/* rgb */ color: rgb(36, 59, 130);
/* oklch */ color: oklch(37.7% 0.123 266.8);

Tailwind

colors: {
  custom: {
    50: '#6c70a7',
    500: '#243b82',
    950: '#000000',
  },
}

SCSS

$custom: #243b82;
$custom-light: #6c70a7;
$custom-dark: #000000;

JSON

{
  "hex": "#243b82",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 130
  },
  "hsl": {
    "h": 225.319,
    "s": 56.627,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37738,
    "c": 0.12301,
    "h": 266.8
  },
  "luminance": 0.05115
}

Semantic roles & 50–950 ramp

primary

#243B82

secondary

#B39A4F

accent

#BB48E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#08070F

muted

#7A7A7F

Preview Lab

Preview with #243B82

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

Preview Lab → · Contrast checker → · Palette generator →