#0F3F4B#0F3F4B

#0F3F4B is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.2% C 0.054 H 218.2°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#0F3F4B
RGB	rgb(15, 63, 75)
HSL	hsl(192, 67%, 18%)
HSV	hsv(192, 80%, 29%)
CMYK	cmyk(80%, 16%, 0%, 70.6%)
CIE-LAB	lab(24.21, -11.12, -11.88)
CIE-LCH	lch(24.21, 16.27, 226.90°)
OKLab	oklab(34.22% -0.0421 -0.0332)
OKLCH	oklch(34.22% 0.054 218.2)
XYZ	xyz(3.2440, 4.1642, 7.2880)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F3F4B #4B1B0F

analogous

#0F4B39 #0F3F4B #0F214B

triadic

#0F3F4B #4B0F3F #3F4B0F

tetradic

#0F3F4B #390F4B #4B1B0F #214B0F

square

#0F3F4B #390F4B #4B1B0F #214B0F

split-complementary

#0F3F4B #4B0F21 #4B390F

monochromatic

#05151A #05151A #0F3F4B #196A7E #2395B1

Accessibility & contrast

On white

11.46

#0F3F4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#0F3F4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F3F4B

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F3F4B	#FFFFFF	#000000	##FFFFFF
##0F3F4B	1.00	11.46	1.83	11.46
#FFFFFF	11.46	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373D4C

Deuteranopia (green-blind)

#2F374B

Tritanopia (blue-blind)

#004343

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #0f3f4b;
/* rgb */ color: rgb(15, 63, 75);
/* oklch */ color: oklch(34.2% 0.054 218.2);

Tailwind

colors: {
  custom: {
    50: '#58747d',
    500: '#0f3f4b',
    950: '#000000',
  },
}

SCSS

$custom: #0f3f4b;
$custom-light: #58747d;
$custom-dark: #000000;

JSON

{
  "hex": "#0f3f4b",
  "rgb": {
    "r": 15,
    "g": 63,
    "b": 75
  },
  "hsl": {
    "h": 192,
    "s": 66.667,
    "l": 17.647
  },
  "oklch": {
    "l": 0.34215,
    "c": 0.05361,
    "h": 218.2
  },
  "luminance": 0.04165
}

Semantic roles & 50–950 ramp

primary

#0F3F4B

secondary

#854130

accent

#603EEA

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #0F3F4B

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

Preview Lab → · Contrast checker → · Palette generator →