#133B53#133B53

#133B53 is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 33.7% C 0.061 H 238.8°. Best body text is #FFFFFF at 11.81:1 contrast (WCAG AA passes).

Color values

HEX	#133B53
RGB	rgb(19, 59, 83)
HSL	hsl(203, 63%, 20%)
HSV	hsv(203, 77%, 33%)
CMYK	cmyk(77.1%, 28.9%, 0%, 67.5%)
CIE-LAB	lab(23.31, -4.79, -18.55)
CIE-LCH	lch(23.31, 19.16, 255.53°)
OKLab	oklab(33.66% -0.0316 -0.0523)
OKLCH	oklch(33.66% 0.061 238.8)
XYZ	xyz(3.3932, 3.8905, 8.7541)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133B53 #532B13

analogous

#13534B #133B53 #131B53

triadic

#133B53 #53133B #3B5313

tetradic

#133B53 #4B1353 #532B13 #1B5313

square

#133B53 #4B1353 #532B13 #1B5313

split-complementary

#133B53 #53131B #534B13

monochromatic

#061219 #081821 #133B53 #1E5E85 #2A82B7

Accessibility & contrast

On white

11.81

#133B53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#133B53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133B53

11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133B53	#FFFFFF	#000000	##FFFFFF
##133B53	1.00	11.81	1.78	11.81
#FFFFFF	11.81	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303B54

Deuteranopia (green-blind)

#273553

Tritanopia (blue-blind)

#004143

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #133b53;
/* rgb */ color: rgb(19, 59, 83);
/* oklch */ color: oklch(33.7% 0.061 238.8);

Tailwind

colors: {
  custom: {
    50: '#5a7083',
    500: '#133b53',
    950: '#000000',
  },
}

SCSS

$custom: #133b53;
$custom-light: #5a7083;
$custom-dark: #000000;

JSON

{
  "hex": "#133b53",
  "rgb": {
    "r": 19,
    "g": 59,
    "b": 83
  },
  "hsl": {
    "h": 202.5,
    "s": 62.745,
    "l": 20
  },
  "oklch": {
    "l": 0.33657,
    "c": 0.06112,
    "h": 238.8
  },
  "luminance": 0.03891
}

Semantic roles & 50–950 ramp

primary

#133B53

secondary

#8B5636

accent

#7F42E6

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070A

muted

#797A7C

Preview Lab

Preview with #133B53

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

Preview Lab → · Contrast checker → · Palette generator →