#243B9C#243B9C

#243B9C is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.0% C 0.160 H 267.9°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#243B9C
RGB	rgb(36, 59, 156)
HSL	hsl(229, 63%, 38%)
HSV	hsv(229, 77%, 61%)
CMYK	cmyk(76.9%, 62.2%, 0%, 38.8%)
CIE-LAB	lab(29.16, 27.06, -55.31)
CIE-LCH	lch(29.16, 61.57, 296.07°)
OKLab	oklab(39.98% -0.0057 -0.1598)
OKLCH	oklch(39.98% 0.16 267.9)
XYZ	xyz(8.2902, 5.9024, 32.1484)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B9C #9C8524

analogous

#24779C #243B9C #49249C

triadic

#243B9C #9C243B #3B9C24

tetradic

#243B9C #9C2477 #9C8524 #249C49

square

#243B9C #9C2477 #9C8524 #249C49

split-complementary

#243B9C #9C4924 #779C24

monochromatic

#0D1539 #19286A #243B9C #2F4ECE #6078DA

Accessibility & contrast

On white

9.63

#243B9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#243B9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B9C

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B9C	#FFFFFF	#000000	##FFFFFF
##243B9C	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)

#004A9F

Deuteranopia (green-blind)

#003F9A

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #243b9c;
/* rgb */ color: rgb(36, 59, 156);
/* oklch */ color: oklch(40.0% 0.160 267.9);

Tailwind

colors: {
  custom: {
    50: '#7270ba',
    500: '#243b9c',
    950: '#000000',
  },
}

SCSS

$custom: #243b9c;
$custom-light: #7270ba;
$custom-dark: #000000;

JSON

{
  "hex": "#243b9c",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 156
  },
  "hsl": {
    "h": 228.5,
    "s": 62.5,
    "l": 37.647
  },
  "oklch": {
    "l": 0.39977,
    "c": 0.15993,
    "h": 267.9
  },
  "luminance": 0.05903
}

Semantic roles & 50–950 ramp

primary

#243B9C

secondary

#BFAC5C

accent

#C642E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #243B9C

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

Preview Lab → · Contrast checker → · Palette generator →