#243F5F#243F5F

#243F5F is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.2% C 0.065 H 253.6°. Best body text is #FFFFFF at 10.76:1 contrast (WCAG AA passes).

Color values

HEX	#243F5F
RGB	rgb(36, 63, 95)
HSL	hsl(213, 45%, 26%)
HSV	hsv(213, 62%, 37%)
CMYK	cmyk(62.1%, 33.7%, 0%, 62.7%)
CIE-LAB	lab(26.03, 0.66, -22.08)
CIE-LCH	lch(26.03, 22.09, 271.71°)
OKLab	oklab(36.22% -0.0183 -0.0623)
OKLCH	oklch(36.22% 0.065 253.6)
XYZ	xyz(4.5699, 4.7559, 11.5014)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F5F #5F4424

analogous

#245C5F #243F5F #26245F

triadic

#243F5F #5F243F #3F5F24

tetradic

#243F5F #5F245C #5F4424 #245F26

square

#243F5F #5F245C #5F4424 #245F26

split-complementary

#243F5F #5F2624 #5C5F24

monochromatic

#080F16 #132233 #243F5F #355C8B #467AB8

Accessibility & contrast

On white

10.76

#243F5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#243F5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F5F

10.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F5F	#FFFFFF	#000000	##FFFFFF
##243F5F	1.00	10.76	1.95	10.76
#FFFFFF	10.76	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#324160

Deuteranopia (green-blind)

#2A3B5E

Tritanopia (blue-blind)

#00464A

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #243f5f;
/* rgb */ color: rgb(36, 63, 95);
/* oklch */ color: oklch(36.2% 0.065 253.6);

Tailwind

colors: {
  custom: {
    50: '#64738c',
    500: '#243f5f',
    950: '#000000',
  },
}

SCSS

$custom: #243f5f;
$custom-light: #64738c;
$custom-dark: #000000;

JSON

{
  "hex": "#243f5f",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 95
  },
  "hsl": {
    "h": 212.542,
    "s": 45.038,
    "l": 25.686
  },
  "oklch": {
    "l": 0.36216,
    "c": 0.06489,
    "h": 253.6
  },
  "luminance": 0.04756
}

Semantic roles & 50–950 ramp

primary

#243F5F

secondary

#93724C

accent

#9953D5

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#06080C

muted

#7A7B7D

Preview Lab

Preview with #243F5F

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

Preview Lab → · Contrast checker → · Palette generator →