#243B71#243B71

#243B71 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.4% C 0.097 H 264.7°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#243B71
RGB	rgb(36, 59, 113)
HSL	hsl(222, 52%, 29%)
HSV	hsv(222, 68%, 44%)
CMYK	cmyk(68.1%, 47.8%, 0%, 55.7%)
CIE-LAB	lab(25.85, 10.30, -33.93)
CIE-LCH	lch(25.85, 35.46, 286.88°)
OKLab	oklab(36.43% -0.009 -0.097)
OKLCH	oklch(36.43% 0.097 264.7)
XYZ	xyz(5.2711, 4.6948, 16.2480)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B71 #715A24

analogous

#246271 #243B71 #342471

triadic

#243B71 #71243B #3B7124

tetradic

#243B71 #712462 #715A24 #247134

square

#243B71 #712462 #715A24 #247134

split-complementary

#243B71 #713424 #627124

monochromatic

#070C17 #152343 #243B71 #33539F #4A6FC5

Accessibility & contrast

On white

10.83

#243B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#243B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B71

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B71	#FFFFFF	#000000	##FFFFFF
##243B71	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214173

Deuteranopia (green-blind)

#133A70

Tritanopia (blue-blind)

#004750

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243b71;
/* rgb */ color: rgb(36, 59, 113);
/* oklch */ color: oklch(36.4% 0.097 264.7);

Tailwind

colors: {
  custom: {
    50: '#68709a',
    500: '#243b71',
    950: '#000000',
  },
}

SCSS

$custom: #243b71;
$custom-light: #68709a;
$custom-dark: #000000;

JSON

{
  "hex": "#243b71",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 113
  },
  "hsl": {
    "h": 222.078,
    "s": 51.678,
    "l": 29.216
  },
  "oklch": {
    "l": 0.36428,
    "c": 0.09741,
    "h": 264.7
  },
  "luminance": 0.04695
}

Semantic roles & 50–950 ramp

primary

#243B71

secondary

#A48A4D

accent

#B14DDB

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243B71

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

Preview Lab → · Contrast checker → · Palette generator →