#0F405B#0F405B

#0F405B is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.4% C 0.069 H 238.0°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#0F405B
RGB	rgb(15, 64, 91)
HSL	hsl(201, 72%, 21%)
HSV	hsv(201, 84%, 36%)
CMYK	cmyk(83.5%, 29.7%, 0%, 64.3%)
CIE-LAB	lab(25.33, -5.43, -20.64)
CIE-LCH	lch(25.33, 21.34, 255.26°)
OKLab	oklab(35.37% -0.0365 -0.0583)
OKLCH	oklch(35.37% 0.069 238)
XYZ	xyz(3.9180, 4.5232, 10.5621)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F405B #5B2A0F

analogous

#0F5B50 #0F405B #0F1A5B

triadic

#0F405B #5B0F40 #405B0F

tetradic

#0F405B #500F5B #5B2A0F #1A5B0F

square

#0F405B #500F5B #5B2A0F #1A5B0F

split-complementary

#0F405B #5B0F1A #5B500F

monochromatic

#04121A #061B26 #0F405B #186590 #208AC4

Accessibility & contrast

On white

11.02

#0F405B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#0F405B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F405B

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F405B	#FFFFFF	#000000	##FFFFFF
##0F405B	1.00	11.02	1.90	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33405C

Deuteranopia (green-blind)

#29395B

Tritanopia (blue-blind)

#004749

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #0f405b;
/* rgb */ color: rgb(15, 64, 91);
/* oklch */ color: oklch(35.4% 0.069 238.0);

Tailwind

colors: {
  custom: {
    50: '#5b7489',
    500: '#0f405b',
    950: '#000000',
  },
}

SCSS

$custom: #0f405b;
$custom-light: #5b7489;
$custom-dark: #000000;

JSON

{
  "hex": "#0f405b",
  "rgb": {
    "r": 15,
    "g": 64,
    "b": 91
  },
  "hsl": {
    "h": 201.316,
    "s": 71.698,
    "l": 20.784
  },
  "oklch": {
    "l": 0.35368,
    "c": 0.06879,
    "h": 238
  },
  "luminance": 0.04524
}

Semantic roles & 50–950 ramp

primary

#0F405B

secondary

#955531

accent

#7A39EE

background

#F5F7F8

surface

#E9EDF0

border

#C5C8CB

text

#04080B

muted

#797B7C

Preview Lab

Preview with #0F405B

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

Preview Lab → · Contrast checker → · Palette generator →