#243E7B#243E7B

#243E7B is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.9% C 0.109 H 264.4°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#243E7B
RGB	rgb(36, 62, 123)
HSL	hsl(222, 55%, 31%)
HSV	hsv(222, 71%, 48%)
CMYK	cmyk(70.7%, 49.6%, 0%, 51.8%)
CIE-LAB	lab(27.43, 12.13, -37.71)
CIE-LCH	lch(27.43, 39.62, 287.83°)
OKLab	oklab(37.86% -0.0105 -0.1081)
OKLCH	oklch(37.86% 0.109 264.4)
XYZ	xyz(6.0241, 5.2498, 19.4309)
Luminance	0.0525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243E7B #7B6124

analogous

#24697B #243E7B #35247B

triadic

#243E7B #7B243E #3E7B24

tetradic

#243E7B #7B2469 #7B6124 #247B35

square

#243E7B #7B2469 #7B6124 #247B35

split-complementary

#243E7B #7B3524 #697B24

monochromatic

#080E1C #16264C #243E7B #3256AA #4E74CB

Accessibility & contrast

On white

10.24

#243E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#243E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243E7B

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243E7B	#FFFFFF	#000000	##FFFFFF
##243E7B	1.00	10.24	2.05	10.24
#FFFFFF	10.24	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E457D

Deuteranopia (green-blind)

#093D7A

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #243e7b;
/* rgb */ color: rgb(36, 62, 123);
/* oklch */ color: oklch(37.9% 0.109 264.4);

Tailwind

colors: {
  custom: {
    50: '#6a72a2',
    500: '#243e7b',
    950: '#000000',
  },
}

SCSS

$custom: #243e7b;
$custom-light: #6a72a2;
$custom-dark: #000000;

JSON

{
  "hex": "#243e7b",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 123
  },
  "hsl": {
    "h": 222.069,
    "s": 54.717,
    "l": 31.176
  },
  "oklch": {
    "l": 0.37863,
    "c": 0.10857,
    "h": 264.4
  },
  "luminance": 0.0525
}

Semantic roles & 50–950 ramp

primary

#243E7B

secondary

#AD914D

accent

#B24ADE

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #243E7B

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

Preview Lab → · Contrast checker → · Palette generator →