#243AAF#243AAF

#243AAF is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.6% C 0.186 H 268.2°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#243AAF
RGB	rgb(36, 58, 175)
HSL	hsl(231, 66%, 41%)
HSV	hsv(231, 79%, 69%)
CMYK	cmyk(79.4%, 66.9%, 0%, 31.4%)
CIE-LAB	lab(30.63, 34.87, -64.35)
CIE-LCH	lch(30.63, 73.19, 298.45°)
OKLab	oklab(41.58% -0.0058 -0.1863)
OKLCH	oklch(41.58% 0.186 268.2)
XYZ	xyz(9.9758, 6.4952, 41.2771)
Luminance	0.0650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243AAF #AF9924

analogous

#2480AF #243AAF #5424AF

triadic

#243AAF #AF243A #3AAF24

tetradic

#243AAF #AF2480 #AF9924 #24AF54

square

#243AAF #AF2480 #AF9924 #24AF54

split-complementary

#243AAF #AF5424 #80AF24

monochromatic

#0F1849 #1A297C #243AAF #3A53D6 #6D7FE1

Accessibility & contrast

On white

9.13

#243AAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#243AAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243AAF

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243AAF	#FFFFFF	#000000	##FFFFFF
##243AAF	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB3

Deuteranopia (green-blind)

#0042AD

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #243aaf;
/* rgb */ color: rgb(36, 58, 175);
/* oklch */ color: oklch(41.6% 0.186 268.2);

Tailwind

colors: {
  custom: {
    50: '#7770c8',
    500: '#243aaf',
    950: '#000000',
  },
}

SCSS

$custom: #243aaf;
$custom-light: #7770c8;
$custom-dark: #000000;

JSON

{
  "hex": "#243aaf",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 175
  },
  "hsl": {
    "h": 230.504,
    "s": 65.877,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41581,
    "c": 0.18641,
    "h": 268.2
  },
  "luminance": 0.06496
}

Semantic roles & 50–950 ramp

primary

#243AAF

secondary

#C7B868

accent

#CE3FE9

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #243AAF

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

Preview Lab → · Contrast checker → · Palette generator →