#243F73#243F73

#243F73 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.5% C 0.095 H 262.1°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#243F73
RGB	rgb(36, 63, 115)
HSL	hsl(219, 52%, 30%)
HSV	hsv(219, 69%, 45%)
CMYK	cmyk(68.7%, 45.2%, 0%, 54.9%)
CIE-LAB	lab(27.21, 8.31, -33.03)
CIE-LCH	lch(27.21, 34.06, 284.12°)
OKLab	oklab(37.52% -0.013 -0.0943)
OKLCH	oklch(37.52% 0.095 262.1)
XYZ	xyz(5.5985, 5.1673, 16.9187)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F73 #735824

analogous

#246773 #243F73 #312473

triadic

#243F73 #73243F #3F7324

tetradic

#243F73 #732467 #735824 #247331

square

#243F73 #732467 #735824 #247331

split-complementary

#243F73 #733124 #677324

monochromatic

#070D17 #152544 #243F73 #3359A2 #4B75C7

Accessibility & contrast

On white

10.33

#243F73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#243F73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F73

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F73	#FFFFFF	#000000	##FFFFFF
##243F73	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)

#274475

Deuteranopia (green-blind)

#1A3D72

Tritanopia (blue-blind)

#004B53

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243f73;
/* rgb */ color: rgb(36, 63, 115);
/* oklch */ color: oklch(37.5% 0.095 262.1);

Tailwind

colors: {
  custom: {
    50: '#68739b',
    500: '#243f73',
    950: '#000000',
  },
}

SCSS

$custom: #243f73;
$custom-light: #68739b;
$custom-dark: #000000;

JSON

{
  "hex": "#243f73",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 115
  },
  "hsl": {
    "h": 219.494,
    "s": 52.318,
    "l": 29.608
  },
  "oklch": {
    "l": 0.37516,
    "c": 0.09516,
    "h": 262.1
  },
  "luminance": 0.05168
}

Semantic roles & 50–950 ramp

primary

#243F73

secondary

#A6874D

accent

#AB4CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #243F73

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

Preview Lab → · Contrast checker → · Palette generator →