#133F4B#133F4B

#133F4B is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.3% C 0.051 H 219.3°. Best body text is #FFFFFF at 11.41:1 contrast (WCAG AA passes).

Color values

HEX	#133F4B
RGB	rgb(19, 63, 75)
HSL	hsl(193, 60%, 18%)
HSV	hsv(193, 75%, 29%)
CMYK	cmyk(74.7%, 16%, 0%, 70.6%)
CIE-LAB	lab(24.33, -10.45, -11.69)
CIE-LCH	lch(24.33, 15.68, 228.22°)
OKLab	oklab(34.34% -0.0398 -0.0326)
OKLCH	oklch(34.34% 0.051 219.3)
XYZ	xyz(3.3155, 4.2011, 7.2914)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133F4B #4B1F13

analogous

#134B3B #133F4B #13234B

triadic

#133F4B #4B133F #3F4B13

tetradic

#133F4B #3B134B #4B1F13 #234B13

square

#133F4B #3B134B #4B1F13 #234B13

split-complementary

#133F4B #4B1323 #4B3B13

monochromatic

#061518 #07161A #133F4B #1F687C #2C91AD

Accessibility & contrast

On white

11.41

#133F4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#133F4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133F4B

11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133F4B	#FFFFFF	#000000	##FFFFFF
##133F4B	1.00	11.41	1.84	11.41
#FFFFFF	11.41	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383D4C

Deuteranopia (green-blind)

#30374B

Tritanopia (blue-blind)

#004343

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #133f4b;
/* rgb */ color: rgb(19, 63, 75);
/* oklch */ color: oklch(34.3% 0.051 219.3);

Tailwind

colors: {
  custom: {
    50: '#59747d',
    500: '#133f4b',
    950: '#000000',
  },
}

SCSS

$custom: #133f4b;
$custom-light: #59747d;
$custom-dark: #000000;

JSON

{
  "hex": "#133f4b",
  "rgb": {
    "r": 19,
    "g": 63,
    "b": 75
  },
  "hsl": {
    "h": 192.857,
    "s": 59.574,
    "l": 18.431
  },
  "oklch": {
    "l": 0.34344,
    "c": 0.05143,
    "h": 219.3
  },
  "luminance": 0.04201
}

Semantic roles & 50–950 ramp

primary

#133F4B

secondary

#844736

accent

#6745E3

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #133F4B

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

Preview Lab → · Contrast checker → · Palette generator →