#243DAF#243DAF

#243DAF is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.1% C 0.183 H 267.7°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#243DAF
RGB	rgb(36, 61, 175)
HSL	hsl(229, 66%, 41%)
HSV	hsv(229, 79%, 69%)
CMYK	cmyk(79.4%, 65.1%, 0%, 31.4%)
CIE-LAB	lab(31.36, 32.93, -63.15)
CIE-LCH	lch(31.36, 71.22, 297.54°)
OKLab	oklab(42.12% -0.0074 -0.1828)
OKLCH	oklch(42.12% 0.183 267.7)
XYZ	xyz(10.1315, 6.8065, 41.3290)
Luminance	0.0681 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243DAF #AF9624

analogous

#2483AF #243DAF #5124AF

triadic

#243DAF #AF243D #3DAF24

tetradic

#243DAF #AF2483 #AF9624 #24AF51

square

#243DAF #AF2483 #AF9624 #24AF51

split-complementary

#243DAF #AF5124 #83AF24

monochromatic

#0F1A49 #1A2B7C #243DAF #3A56D6 #6D81E1

Accessibility & contrast

On white

8.89

#243DAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#243DAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243DAF

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243DAF	#FFFFFF	#000000	##FFFFFF
##243DAF	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B3

Deuteranopia (green-blind)

#0043AD

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #243daf;
/* rgb */ color: rgb(36, 61, 175);
/* oklch */ color: oklch(42.1% 0.183 267.7);

Tailwind

colors: {
  custom: {
    50: '#7772c8',
    500: '#243daf',
    950: '#000000',
  },
}

SCSS

$custom: #243daf;
$custom-light: #7772c8;
$custom-dark: #000000;

JSON

{
  "hex": "#243daf",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 175
  },
  "hsl": {
    "h": 229.209,
    "s": 65.877,
    "l": 41.373
  },
  "oklch": {
    "l": 0.42119,
    "c": 0.18293,
    "h": 267.7
  },
  "luminance": 0.06808
}

Semantic roles & 50–950 ramp

primary

#243DAF

secondary

#C7B668

accent

#CA3FE9

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #243DAF

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

Preview Lab → · Contrast checker → · Palette generator →