#243CAF#243CAF

#243CAF is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.9% C 0.184 H 267.9°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#243CAF
RGB	rgb(36, 60, 175)
HSL	hsl(230, 66%, 41%)
HSV	hsv(230, 79%, 69%)
CMYK	cmyk(79.4%, 65.7%, 0%, 31.4%)
CIE-LAB	lab(31.12, 33.57, -63.55)
CIE-LCH	lch(31.12, 71.88, 297.85°)
OKLab	oklab(41.94% -0.0069 -0.184)
OKLCH	oklch(41.94% 0.184 267.9)
XYZ	xyz(10.0786, 6.7008, 41.3113)
Luminance	0.0670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243CAF #AF9724

analogous

#2482AF #243CAF #5224AF

triadic

#243CAF #AF243C #3CAF24

tetradic

#243CAF #AF2482 #AF9724 #24AF52

square

#243CAF #AF2482 #AF9724 #24AF52

split-complementary

#243CAF #AF5224 #82AF24

monochromatic

#0F1949 #1A2B7C #243CAF #3A55D6 #6D81E1

Accessibility & contrast

On white

8.97

#243CAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#243CAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243CAF

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243CAF	#FFFFFF	#000000	##FFFFFF
##243CAF	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B3

Deuteranopia (green-blind)

#0043AD

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #243caf;
/* rgb */ color: rgb(36, 60, 175);
/* oklch */ color: oklch(41.9% 0.184 267.9);

Tailwind

colors: {
  custom: {
    50: '#7771c8',
    500: '#243caf',
    950: '#000000',
  },
}

SCSS

$custom: #243caf;
$custom-light: #7771c8;
$custom-dark: #000000;

JSON

{
  "hex": "#243caf",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 175
  },
  "hsl": {
    "h": 229.64,
    "s": 65.877,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41938,
    "c": 0.1841,
    "h": 267.9
  },
  "luminance": 0.06702
}

Semantic roles & 50–950 ramp

primary

#243CAF

secondary

#C7B768

accent

#CB3FE9

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #243CAF

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

Preview Lab → · Contrast checker → · Palette generator →