#133B4B#133B4B

#133B4B is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.2% C 0.052 H 228.0°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#133B4B
RGB	rgb(19, 59, 75)
HSL	hsl(197, 60%, 18%)
HSV	hsv(197, 75%, 29%)
CMYK	cmyk(74.7%, 21.3%, 0%, 70.6%)
CIE-LAB	lab(22.91, -7.93, -13.87)
CIE-LCH	lch(22.91, 15.97, 240.24°)
OKLab	oklab(33.21% -0.0349 -0.0388)
OKLCH	oklch(33.21% 0.052 228)
XYZ	xyz(3.1020, 3.7740, 7.2202)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133B4B #4B2313

analogous

#134B3F #133B4B #131F4B

triadic

#133B4B #4B133B #3B4B13

tetradic

#133B4B #3F134B #4B2313 #1F4B13

square

#133B4B #3F134B #4B2313 #1F4B13

split-complementary

#133B4B #4B131F #4B3F13

monochromatic

#061318 #07151A #133B4B #1F617C #2C88AD

Accessibility & contrast

On white

11.97

#133B4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#133B4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133B4B

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133B4B	#FFFFFF	#000000	##FFFFFF
##133B4B	1.00	11.97	1.75	11.97
#FFFFFF	11.97	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333A4C

Deuteranopia (green-blind)

#2B344B

Tritanopia (blue-blind)

#004040

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #133b4b;
/* rgb */ color: rgb(19, 59, 75);
/* oklch */ color: oklch(33.2% 0.052 228.0);

Tailwind

colors: {
  custom: {
    50: '#59717d',
    500: '#133b4b',
    950: '#000000',
  },
}

SCSS

$custom: #133b4b;
$custom-light: #59717d;
$custom-dark: #000000;

JSON

{
  "hex": "#133b4b",
  "rgb": {
    "r": 19,
    "g": 59,
    "b": 75
  },
  "hsl": {
    "h": 197.143,
    "s": 59.574,
    "l": 18.431
  },
  "oklch": {
    "l": 0.33211,
    "c": 0.0522,
    "h": 228
  },
  "luminance": 0.03774
}

Semantic roles & 50–950 ramp

primary

#133B4B

secondary

#844C36

accent

#7245E3

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #133B4B

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

Preview Lab → · Contrast checker → · Palette generator →