#243A9F#243A9F

#243A9F is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.1% C 0.165 H 268.2°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#243A9F
RGB	rgb(36, 58, 159)
HSL	hsl(229, 63%, 38%)
HSV	hsv(229, 77%, 62%)
CMYK	cmyk(77.4%, 63.5%, 0%, 37.6%)
CIE-LAB	lab(29.17, 28.88, -57.12)
CIE-LCH	lch(29.17, 64.01, 296.82°)
OKLab	oklab(40.06% -0.0051 -0.1652)
OKLCH	oklch(40.06% 0.165 268.2)
XYZ	xyz(8.4964, 5.9034, 33.4859)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A9F #9F8924

analogous

#24779F #243A9F #4B249F

triadic

#243A9F #9F243A #3A9F24

tetradic

#243A9F #9F2477 #9F8924 #249F4B

square

#243A9F #9F2477 #9F8924 #249F4B

split-complementary

#243A9F #9F4B24 #779F24

monochromatic

#0D163B #19286D #243A9F #304DD0 #6278DB

Accessibility & contrast

On white

9.63

#243A9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#243A9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A9F

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A9F	#FFFFFF	#000000	##FFFFFF
##243A9F	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#003F9D

Tritanopia (blue-blind)

#005467

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #243a9f;
/* rgb */ color: rgb(36, 58, 159);
/* oklch */ color: oklch(40.1% 0.165 268.2);

Tailwind

colors: {
  custom: {
    50: '#7370bc',
    500: '#243a9f',
    950: '#000000',
  },
}

SCSS

$custom: #243a9f;
$custom-light: #7370bc;
$custom-dark: #000000;

JSON

{
  "hex": "#243a9f",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 159
  },
  "hsl": {
    "h": 229.268,
    "s": 63.077,
    "l": 38.235
  },
  "oklch": {
    "l": 0.4006,
    "c": 0.16525,
    "h": 268.2
  },
  "luminance": 0.05904
}

Semantic roles & 50–950 ramp

primary

#243A9F

secondary

#C1AF5E

accent

#C942E6

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #243A9F

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

Preview Lab → · Contrast checker → · Palette generator →