#133A5B#133A5B

#133A5B is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 33.9% C 0.073 H 247.6°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#133A5B
RGB	rgb(19, 58, 91)
HSL	hsl(208, 65%, 22%)
HSV	hsv(208, 79%, 36%)
CMYK	cmyk(79.1%, 36.3%, 0%, 64.3%)
CIE-LAB	lab(23.40, -0.86, -23.66)
CIE-LCH	lch(23.40, 23.67, 267.92°)
OKLab	oklab(33.88% -0.0276 -0.0672)
OKLCH	oklch(33.88% 0.073 247.6)
XYZ	xyz(3.6692, 3.9195, 10.4587)
Luminance	0.0392 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133A5B #5B3413

analogous

#135B58 #133A5B #13165B

triadic

#133A5B #5B133A #3A5B13

tetradic

#133A5B #58135B #5B3413 #165B13

square

#133A5B #58135B #5B3413 #165B13

split-complementary

#133A5B #5B1316 #5B5813

monochromatic

#051019 #081A28 #133A5B #1E5A8E #287BC0

Accessibility & contrast

On white

11.77

#133A5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#133A5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133A5B

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133A5B	#FFFFFF	#000000	##FFFFFF
##133A5B	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3B5C

Deuteranopia (green-blind)

#21355A

Tritanopia (blue-blind)

#004246

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #133a5b;
/* rgb */ color: rgb(19, 58, 91);
/* oklch */ color: oklch(33.9% 0.073 247.6);

Tailwind

colors: {
  custom: {
    50: '#5c6f89',
    500: '#133a5b',
    950: '#000000',
  },
}

SCSS

$custom: #133a5b;
$custom-light: #5c6f89;
$custom-dark: #000000;

JSON

{
  "hex": "#133a5b",
  "rgb": {
    "r": 19,
    "g": 58,
    "b": 91
  },
  "hsl": {
    "h": 207.5,
    "s": 65.455,
    "l": 21.569
  },
  "oklch": {
    "l": 0.33878,
    "c": 0.07264,
    "h": 247.6
  },
  "luminance": 0.0392
}

Semantic roles & 50–950 ramp

primary

#133A5B

secondary

#936137

accent

#8D3FE8

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#04070B

muted

#797A7C

Preview Lab

Preview with #133A5B

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

Preview Lab → · Contrast checker → · Palette generator →