#243D9A#243D9A

#243D9A is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.155 H 267.4°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#243D9A
RGB	rgb(36, 61, 154)
HSL	hsl(227, 62%, 37%)
HSV	hsv(227, 77%, 60%)
CMYK	cmyk(76.6%, 60.4%, 0%, 39.6%)
CIE-LAB	lab(29.52, 24.95, -53.50)
CIE-LCH	lch(29.52, 59.03, 295.00°)
OKLab	oklab(40.19% -0.0071 -0.1545)
OKLCH	oklch(40.19% 0.155 267.4)
XYZ	xyz(8.2270, 6.0447, 31.2988)
Luminance	0.0605 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D9A #9A8124

analogous

#24789A #243D9A #46249A

triadic

#243D9A #9A243D #3D9A24

tetradic

#243D9A #9A2478 #9A8124 #249A46

square

#243D9A #9A2478 #9A8124 #249A46

split-complementary

#243D9A #9A4624 #789A24

monochromatic

#0D1637 #182968 #243D9A #3051CC #5F79DA

Accessibility & contrast

On white

9.51

#243D9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#243D9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D9A

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D9A	#FFFFFF	#000000	##FFFFFF
##243D9A	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9D

Deuteranopia (green-blind)

#004098

Tritanopia (blue-blind)

#005565

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #243d9a;
/* rgb */ color: rgb(36, 61, 154);
/* oklch */ color: oklch(40.2% 0.155 267.4);

Tailwind

colors: {
  custom: {
    50: '#7172b9',
    500: '#243d9a',
    950: '#000000',
  },
}

SCSS

$custom: #243d9a;
$custom-light: #7172b9;
$custom-dark: #000000;

JSON

{
  "hex": "#243d9a",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 154
  },
  "hsl": {
    "h": 227.288,
    "s": 62.105,
    "l": 37.255
  },
  "oklch": {
    "l": 0.40192,
    "c": 0.15467,
    "h": 267.4
  },
  "luminance": 0.06046
}

Semantic roles & 50–950 ramp

primary

#243D9A

secondary

#BFA95B

accent

#C343E5

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #243D9A

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

Preview Lab → · Contrast checker → · Palette generator →