#243B7C#243B7C

#243B7C is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.114 H 266.3°. Best body text is #FFFFFF at 10.54:1 contrast (WCAG AA passes).

Color values

HEX	#243B7C
RGB	rgb(36, 59, 124)
HSL	hsl(224, 55%, 31%)
HSV	hsv(224, 71%, 49%)
CMYK	cmyk(71%, 52.4%, 0%, 51.4%)
CIE-LAB	lab(26.61, 14.61, -39.66)
CIE-LCH	lch(26.61, 42.27, 290.22°)
OKLab	oklab(37.26% -0.0074 -0.1138)
OKLCH	oklch(37.26% 0.114 266.3)
XYZ	xyz(5.9283, 4.9576, 19.7094)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B7C #7C6524

analogous

#24677C #243B7C #39247C

triadic

#243B7C #7C243B #3B7C24

tetradic

#243B7C #7C2467 #7C6524 #247C39

square

#243B7C #7C2467 #7C6524 #247C39

split-complementary

#243B7C #7C3924 #677C24

monochromatic

#080E1D #16244D #243B7C #3252AB #4F6FCC

Accessibility & contrast

On white

10.54

#243B7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#243B7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B7C

10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B7C	#FFFFFF	#000000	##FFFFFF
##243B7C	1.00	10.54	1.99	10.54
#FFFFFF	10.54	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15437E

Deuteranopia (green-blind)

#003B7B

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243b7c;
/* rgb */ color: rgb(36, 59, 124);
/* oklch */ color: oklch(37.3% 0.114 266.3);

Tailwind

colors: {
  custom: {
    50: '#6a70a2',
    500: '#243b7c',
    950: '#000000',
  },
}

SCSS

$custom: #243b7c;
$custom-light: #6a70a2;
$custom-dark: #000000;

JSON

{
  "hex": "#243b7c",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 124
  },
  "hsl": {
    "h": 224.318,
    "s": 55,
    "l": 31.373
  },
  "oklch": {
    "l": 0.3726,
    "c": 0.11409,
    "h": 266.3
  },
  "luminance": 0.04958
}

Semantic roles & 50–950 ramp

primary

#243B7C

secondary

#AE954D

accent

#B749DE

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #243B7C

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

Preview Lab → · Contrast checker → · Palette generator →