#133F5A#133F5A

#133F5A is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.2% C 0.067 H 239.8°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#133F5A
RGB	rgb(19, 63, 90)
HSL	hsl(203, 65%, 21%)
HSV	hsv(203, 79%, 35%)
CMYK	cmyk(78.9%, 30%, 0%, 64.7%)
CIE-LAB	lab(25.05, -4.61, -20.42)
CIE-LCH	lch(25.05, 20.93, 257.27°)
OKLab	oklab(35.16% -0.0335 -0.0577)
OKLCH	oklch(35.16% 0.067 239.8)
XYZ	xyz(3.8908, 4.4312, 10.3211)
Luminance	0.0443 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133F5A #5A2E13

analogous

#135A52 #133F5A #131C5A

triadic

#133F5A #5A133F #3F5A13

tetradic

#133F5A #52135A #5A2E13 #1C5A13

square

#133F5A #52135A #5A2E13 #1C5A13

split-complementary

#133F5A #5A131C #5A5213

monochromatic

#051219 #081C27 #133F5A #1E628D #2886BF

Accessibility & contrast

On white

11.13

#133F5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#133F5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133F5A

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133F5A	#FFFFFF	#000000	##FFFFFF
##133F5A	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323F5B

Deuteranopia (green-blind)

#29385A

Tritanopia (blue-blind)

#004648

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #133f5a;
/* rgb */ color: rgb(19, 63, 90);
/* oklch */ color: oklch(35.2% 0.067 239.8);

Tailwind

colors: {
  custom: {
    50: '#5c7388',
    500: '#133f5a',
    950: '#000000',
  },
}

SCSS

$custom: #133f5a;
$custom-light: #5c7388;
$custom-dark: #000000;

JSON

{
  "hex": "#133f5a",
  "rgb": {
    "r": 19,
    "g": 63,
    "b": 90
  },
  "hsl": {
    "h": 202.817,
    "s": 65.138,
    "l": 21.373
  },
  "oklch": {
    "l": 0.35159,
    "c": 0.06669,
    "h": 239.8
  },
  "luminance": 0.04432
}

Semantic roles & 50–950 ramp

primary

#133F5A

secondary

#925937

accent

#8040E8

background

#F5F7F8

surface

#E9EDF0

border

#C5C8CB

text

#04080B

muted

#797B7C

Preview Lab

Preview with #133F5A

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

Preview Lab → · Contrast checker → · Palette generator →