#243D74#243D74

#243D74 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.1% C 0.099 H 263.8°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#243D74
RGB	rgb(36, 61, 116)
HSL	hsl(221, 53%, 30%)
HSV	hsv(221, 69%, 45%)
CMYK	cmyk(69%, 47.4%, 0%, 54.5%)
CIE-LAB	lab(26.66, 10.08, -34.54)
CIE-LCH	lch(26.66, 35.98, 286.27°)
OKLab	oklab(37.11% -0.0106 -0.0987)
OKLCH	oklch(37.11% 0.099 263.8)
XYZ	xyz(5.5476, 4.9730, 17.1871)
Luminance	0.0497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D74 #745B24

analogous

#246574 #243D74 #332474

triadic

#243D74 #74243D #3D7424

tetradic

#243D74 #742465 #745B24 #247433

square

#243D74 #742465 #745B24 #247433

split-complementary

#243D74 #743324 #657424

monochromatic

#070C17 #162445 #243D74 #3256A3 #4B72C7

Accessibility & contrast

On white

10.53

#243D74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#243D74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D74

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D74	#FFFFFF	#000000	##FFFFFF
##243D74	1.00	10.53	1.99	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224376

Deuteranopia (green-blind)

#143C73

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243d74;
/* rgb */ color: rgb(36, 61, 116);
/* oklch */ color: oklch(37.1% 0.099 263.8);

Tailwind

colors: {
  custom: {
    50: '#68729c',
    500: '#243d74',
    950: '#000000',
  },
}

SCSS

$custom: #243d74;
$custom-light: #68729c;
$custom-dark: #000000;

JSON

{
  "hex": "#243d74",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 116
  },
  "hsl": {
    "h": 221.25,
    "s": 52.632,
    "l": 29.804
  },
  "oklch": {
    "l": 0.37115,
    "c": 0.09932,
    "h": 263.8
  },
  "luminance": 0.04974
}

Semantic roles & 50–950 ramp

primary

#243D74

secondary

#A78B4D

accent

#AF4CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243D74

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

Preview Lab → · Contrast checker → · Palette generator →