#243D7C#243D7C

#243D7C is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.7% C 0.111 H 265.2°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#243D7C
RGB	rgb(36, 61, 124)
HSL	hsl(223, 55%, 31%)
HSV	hsv(223, 71%, 49%)
CMYK	cmyk(71%, 50.8%, 0%, 51.4%)
CIE-LAB	lab(27.21, 13.22, -38.71)
CIE-LCH	lch(27.21, 40.90, 288.85°)
OKLab	oklab(37.71% -0.0094 -0.111)
OKLCH	oklch(37.71% 0.111 265.2)
XYZ	xyz(6.0331, 5.1672, 19.7443)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D7C #7C6324

analogous

#24697C #243D7C #37247C

triadic

#243D7C #7C243D #3D7C24

tetradic

#243D7C #7C2469 #7C6324 #247C37

square

#243D7C #7C2469 #7C6324 #247C37

split-complementary

#243D7C #7C3724 #697C24

monochromatic

#080E1D #16264D #243D7C #3254AB #4F72CC

Accessibility & contrast

On white

10.33

#243D7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#243D7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D7C

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D7C	#FFFFFF	#000000	##FFFFFF
##243D7C	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A457E

Deuteranopia (green-blind)

#023C7B

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243d7c;
/* rgb */ color: rgb(36, 61, 124);
/* oklch */ color: oklch(37.7% 0.111 265.2);

Tailwind

colors: {
  custom: {
    50: '#6a72a2',
    500: '#243d7c',
    950: '#000000',
  },
}

SCSS

$custom: #243d7c;
$custom-light: #6a72a2;
$custom-dark: #000000;

JSON

{
  "hex": "#243d7c",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 124
  },
  "hsl": {
    "h": 222.955,
    "s": 55,
    "l": 31.373
  },
  "oklch": {
    "l": 0.37711,
    "c": 0.1114,
    "h": 265.2
  },
  "luminance": 0.05168
}

Semantic roles & 50–950 ramp

primary

#243D7C

secondary

#AE934D

accent

#B449DE

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #243D7C

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

Preview Lab → · Contrast checker → · Palette generator →