#243D9C#243D9C

#243D9C is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.157 H 267.4°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#243D9C
RGB	rgb(36, 61, 156)
HSL	hsl(228, 63%, 38%)
HSV	hsv(228, 77%, 61%)
CMYK	cmyk(76.9%, 60.9%, 0%, 38.8%)
CIE-LAB	lab(29.69, 25.72, -54.44)
CIE-LCH	lch(29.69, 60.21, 295.29°)
OKLab	oklab(40.37% -0.0071 -0.1573)
OKLCH	oklch(40.37% 0.157 267.4)
XYZ	xyz(8.3950, 6.1119, 32.1833)
Luminance	0.0611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D9C #9C8324

analogous

#24799C #243D9C #47249C

triadic

#243D9C #9C243D #3D9C24

tetradic

#243D9C #9C2479 #9C8324 #249C47

square

#243D9C #9C2479 #9C8324 #249C47

split-complementary

#243D9C #9C4724 #799C24

monochromatic

#0D1639 #192A6A #243D9C #2F50CE #607ADA

Accessibility & contrast

On white

9.45

#243D9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#243D9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D9C

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D9C	#FFFFFF	#000000	##FFFFFF
##243D9C	1.00	9.45	2.22	9.45
#FFFFFF	9.45	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9F

Deuteranopia (green-blind)

#00419A

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #243d9c;
/* rgb */ color: rgb(36, 61, 156);
/* oklch */ color: oklch(40.4% 0.157 267.4);

Tailwind

colors: {
  custom: {
    50: '#7272ba',
    500: '#243d9c',
    950: '#000000',
  },
}

SCSS

$custom: #243d9c;
$custom-light: #7272ba;
$custom-dark: #000000;

JSON

{
  "hex": "#243d9c",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 156
  },
  "hsl": {
    "h": 227.5,
    "s": 62.5,
    "l": 37.647
  },
  "oklch": {
    "l": 0.40369,
    "c": 0.15743,
    "h": 267.4
  },
  "luminance": 0.06113
}

Semantic roles & 50–950 ramp

primary

#243D9C

secondary

#BFAB5C

accent

#C442E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #243D9C

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

Preview Lab → · Contrast checker → · Palette generator →