#243F71#243F71

#243F71 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.4% C 0.092 H 261.6°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#243F71
RGB	rgb(36, 63, 113)
HSL	hsl(219, 52%, 29%)
HSV	hsv(219, 68%, 44%)
CMYK	cmyk(68.1%, 44.2%, 0%, 55.7%)
CIE-LAB	lab(27.08, 7.53, -31.96)
CIE-LCH	lch(27.08, 32.84, 283.25°)
OKLab	oklab(37.38% -0.0134 -0.0911)
OKLCH	oklch(37.38% 0.092 261.6)
XYZ	xyz(5.4846, 5.1218, 16.3192)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F71 #715624

analogous

#246671 #243F71 #302471

triadic

#243F71 #71243F #3F7124

tetradic

#243F71 #712466 #715624 #247130

square

#243F71 #712466 #715624 #247130

split-complementary

#243F71 #713024 #667124

monochromatic

#070D17 #152543 #243F71 #33599F #4A75C5

Accessibility & contrast

On white

10.37

#243F71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#243F71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F71

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F71	#FFFFFF	#000000	##FFFFFF
##243F71	1.00	10.37	2.02	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284473

Deuteranopia (green-blind)

#1C3D70

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243f71;
/* rgb */ color: rgb(36, 63, 113);
/* oklch */ color: oklch(37.4% 0.092 261.6);

Tailwind

colors: {
  custom: {
    50: '#68739a',
    500: '#243f71',
    950: '#000000',
  },
}

SCSS

$custom: #243f71;
$custom-light: #68739a;
$custom-dark: #000000;

JSON

{
  "hex": "#243f71",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 113
  },
  "hsl": {
    "h": 218.961,
    "s": 51.678,
    "l": 29.216
  },
  "oklch": {
    "l": 0.37377,
    "c": 0.09213,
    "h": 261.6
  },
  "luminance": 0.05122
}

Semantic roles & 50–950 ramp

primary

#243F71

secondary

#A4854D

accent

#A94DDB

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #243F71

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

Preview Lab → · Contrast checker → · Palette generator →