#133D5B#133D5B

#133D5B is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.7% C 0.070 H 243.7°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#133D5B
RGB	rgb(19, 61, 91)
HSL	hsl(205, 65%, 22%)
HSV	hsv(205, 79%, 36%)
CMYK	cmyk(79.1%, 33%, 0%, 64.3%)
CIE-LAB	lab(24.42, -2.88, -22.06)
CIE-LCH	lch(24.42, 22.24, 262.55°)
OKLab	oklab(34.68% -0.0309 -0.0624)
OKLCH	oklch(34.68% 0.07 243.7)
XYZ	xyz(3.8249, 4.2308, 10.5105)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133D5B #5B3113

analogous

#135B55 #133D5B #13195B

triadic

#133D5B #5B133D #3D5B13

tetradic

#133D5B #55135B #5B3113 #195B13

square

#133D5B #55135B #5B3113 #195B13

split-complementary

#133D5B #5B1319 #5B5513

monochromatic

#051119 #081B28 #133D5B #1E5F8E #2881C0

Accessibility & contrast

On white

11.37

#133D5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#133D5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133D5B

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133D5B	#FFFFFF	#000000	##FFFFFF
##133D5B	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3E5C

Deuteranopia (green-blind)

#25375A

Tritanopia (blue-blind)

#004448

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #133d5b;
/* rgb */ color: rgb(19, 61, 91);
/* oklch */ color: oklch(34.7% 0.070 243.7);

Tailwind

colors: {
  custom: {
    50: '#5c7289',
    500: '#133d5b',
    950: '#000000',
  },
}

SCSS

$custom: #133d5b;
$custom-light: #5c7289;
$custom-dark: #000000;

JSON

{
  "hex": "#133d5b",
  "rgb": {
    "r": 19,
    "g": 61,
    "b": 91
  },
  "hsl": {
    "h": 205,
    "s": 65.455,
    "l": 21.569
  },
  "oklch": {
    "l": 0.3468,
    "c": 0.06969,
    "h": 243.7
  },
  "luminance": 0.04231
}

Semantic roles & 50–950 ramp

primary

#133D5B

secondary

#935D37

accent

#863FE8

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#04070B

muted

#797A7C

Preview Lab

Preview with #133D5B

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

Preview Lab → · Contrast checker → · Palette generator →