#0B3F4D#0B3F4D

#0B3F4D is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.2% C 0.057 H 220.6°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#0B3F4D
RGB	rgb(11, 63, 77)
HSL	hsl(193, 75%, 17%)
HSV	hsv(193, 86%, 30%)
CMYK	cmyk(85.7%, 18.2%, 0%, 69.8%)
CIE-LAB	lab(24.20, -10.91, -13.22)
CIE-LCH	lch(24.20, 17.14, 230.48°)
OKLab	oklab(34.21% -0.0432 -0.037)
OKLCH	oklch(34.21% 0.057 220.6)
XYZ	xyz(3.2545, 4.1616, 7.6515)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3F4D #4D190B

analogous

#0B4D3A #0B3F4D #0B1E4D

triadic

#0B3F4D #4D0B3F #3F4D0B

tetradic

#0B3F4D #3A0B4D #4D190B #1E4D0B

square

#0B3F4D #3A0B4D #4D190B #1E4D0B

split-complementary

#0B3F4D #4D0B1E #4D3A0B

monochromatic

#04161B #04161B #0B3F4D #136B83 #1A97B8

Accessibility & contrast

On white

11.46

#0B3F4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#0B3F4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3F4D

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3F4D	#FFFFFF	#000000	##FFFFFF
##0B3F4D	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)

#373D4E

Deuteranopia (green-blind)

#2E374D

Tritanopia (blue-blind)

#004343

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #0b3f4d;
/* rgb */ color: rgb(11, 63, 77);
/* oklch */ color: oklch(34.2% 0.057 220.6);

Tailwind

colors: {
  custom: {
    50: '#57747e',
    500: '#0b3f4d',
    950: '#000000',
  },
}

SCSS

$custom: #0b3f4d;
$custom-light: #57747e;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3f4d",
  "rgb": {
    "r": 11,
    "g": 63,
    "b": 77
  },
  "hsl": {
    "h": 192.727,
    "s": 75,
    "l": 17.255
  },
  "oklch": {
    "l": 0.3421,
    "c": 0.05686,
    "h": 220.6
  },
  "luminance": 0.04162
}

Semantic roles & 50–950 ramp

primary

#0B3F4D

secondary

#893F2B

accent

#5E36F2

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #0B3F4D

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

Preview Lab → · Contrast checker → · Palette generator →