#243BA8#243BA8

#243BA8 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.1% C 0.176 H 268.0°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#243BA8
RGB	rgb(36, 59, 168)
HSL	hsl(230, 65%, 40%)
HSV	hsv(230, 79%, 66%)
CMYK	cmyk(78.6%, 64.9%, 0%, 34.1%)
CIE-LAB	lab(30.23, 31.61, -60.82)
CIE-LCH	lch(30.23, 68.54, 297.46°)
OKLab	oklab(41.09% -0.006 -0.176)
OKLCH	oklch(41.09% 0.176 268)
XYZ	xyz(9.3569, 6.3291, 37.7667)
Luminance	0.0633 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243BA8 #A89124

analogous

#247DA8 #243BA8 #4F24A8

triadic

#243BA8 #A8243B #3BA824

tetradic

#243BA8 #A8247D #A89124 #24A84F

square

#243BA8 #A8247D #A89124 #24A84F

split-complementary

#243BA8 #A84F24 #7DA824

monochromatic

#0E1843 #192976 #243BA8 #3551D4 #687DDF

Accessibility & contrast

On white

9.27

#243BA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#243BA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243BA8

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243BA8	#FFFFFF	#000000	##FFFFFF
##243BA8	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAB

Deuteranopia (green-blind)

#0041A6

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #243ba8;
/* rgb */ color: rgb(36, 59, 168);
/* oklch */ color: oklch(41.1% 0.176 268.0);

Tailwind

colors: {
  custom: {
    50: '#7570c3',
    500: '#243ba8',
    950: '#000000',
  },
}

SCSS

$custom: #243ba8;
$custom-light: #7570c3;
$custom-dark: #000000;

JSON

{
  "hex": "#243ba8",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 168
  },
  "hsl": {
    "h": 229.545,
    "s": 64.706,
    "l": 40
  },
  "oklch": {
    "l": 0.4109,
    "c": 0.17608,
    "h": 268
  },
  "luminance": 0.0633
}

Semantic roles & 50–950 ramp

primary

#243BA8

secondary

#C4B463

accent

#CA40E8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #243BA8

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

Preview Lab → · Contrast checker → · Palette generator →