#05243B#05243B

#05243B is a dark, muted cyan. Relative luminance 0.016; OKLCH L 25.1% C 0.056 H 245.1°. Best body text is #FFFFFF at 15.89:1 contrast (WCAG AA passes).

Color values

HEX	#05243B
RGB	rgb(5, 36, 59)
HSL	hsl(206, 84%, 13%)
HSV	hsv(206, 92%, 23%)
CMYK	cmyk(91.5%, 39%, 0%, 76.9%)
CIE-LAB	lab(13.29, -1.31, -17.98)
CIE-LCH	lch(13.29, 18.02, 265.82°)
OKLab	oklab(25.15% -0.0237 -0.0511)
OKLCH	oklch(25.15% 0.056 245.1)
XYZ	xyz(1.4826, 1.6096, 4.3694)
Luminance	0.0161 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05243B #3B1C05

analogous

#053B37 #05243B #05093B

triadic

#05243B #3B0524 #243B05

tetradic

#05243B #37053B #3B1C05 #093B05

square

#05243B #37053B #3B1C05 #093B05

split-complementary

#05243B #3B0509 #3B3705

monochromatic

#02111C #02111C #05243B #0A4673 #0F69AC

Accessibility & contrast

On white

15.89

#05243B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#05243B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05243B

15.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05243B	#FFFFFF	#000000	##FFFFFF
##05243B	1.00	15.89	1.32	15.89
#FFFFFF	15.89	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19253C

Deuteranopia (green-blind)

#11203B

Tritanopia (blue-blind)

#002A2C

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #05243b;
/* rgb */ color: rgb(5, 36, 59);
/* oklch */ color: oklch(25.1% 0.056 245.1);

Tailwind

colors: {
  custom: {
    50: '#4f5e71',
    500: '#05243b',
    950: '#000000',
  },
}

SCSS

$custom: #05243b;
$custom-light: #4f5e71;
$custom-dark: #000000;

JSON

{
  "hex": "#05243b",
  "rgb": {
    "r": 5,
    "g": 36,
    "b": 59
  },
  "hsl": {
    "h": 205.556,
    "s": 84.375,
    "l": 12.549
  },
  "oklch": {
    "l": 0.2515,
    "c": 0.05634,
    "h": 245.1
  },
  "luminance": 0.0161
}

Semantic roles & 50–950 ramp

primary

#05243B

secondary

#7C4720

accent

#852DFB

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020407

muted

#78797A

Preview Lab

Preview with #05243B

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

Preview Lab → · Contrast checker → · Palette generator →