#133B57#133B57

#133B57 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 33.9% C 0.066 H 242.9°. Best body text is #FFFFFF at 11.73:1 contrast (WCAG AA passes).

Color values

HEX	#133B57
RGB	rgb(19, 59, 87)
HSL	hsl(205, 64%, 21%)
HSV	hsv(205, 78%, 34%)
CMYK	cmyk(78.2%, 32.2%, 0%, 65.9%)
CIE-LAB	lab(23.52, -3.17, -20.85)
CIE-LCH	lch(23.52, 21.09, 261.35°)
OKLab	oklab(33.89% -0.0301 -0.059)
OKLCH	oklch(33.89% 0.066 242.9)
XYZ	xyz(3.5522, 3.9541, 9.5910)
Luminance	0.0395 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133B57 #572F13

analogous

#135751 #133B57 #131957

triadic

#133B57 #57133B #3B5713

tetradic

#133B57 #511357 #572F13 #195713

square

#133B57 #511357 #572F13 #195713

split-complementary

#133B57 #571319 #575113

monochromatic

#051119 #081925 #133B57 #1E5D89 #297FBB

Accessibility & contrast

On white

11.73

#133B57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#133B57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133B57

11.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133B57	#FFFFFF	#000000	##FFFFFF
##133B57	1.00	11.73	1.79	11.73
#FFFFFF	11.73	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3C58

Deuteranopia (green-blind)

#253556

Tritanopia (blue-blind)

#004245

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #133b57;
/* rgb */ color: rgb(19, 59, 87);
/* oklch */ color: oklch(33.9% 0.066 242.9);

Tailwind

colors: {
  custom: {
    50: '#5b7086',
    500: '#133b57',
    950: '#000000',
  },
}

SCSS

$custom: #133b57;
$custom-light: #5b7086;
$custom-dark: #000000;

JSON

{
  "hex": "#133b57",
  "rgb": {
    "r": 19,
    "g": 59,
    "b": 87
  },
  "hsl": {
    "h": 204.706,
    "s": 64.151,
    "l": 20.784
  },
  "oklch": {
    "l": 0.33895,
    "c": 0.06622,
    "h": 242.9
  },
  "luminance": 0.03954
}

Semantic roles & 50–950 ramp

primary

#133B57

secondary

#8F5B36

accent

#8541E7

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #133B57

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

Preview Lab → · Contrast checker → · Palette generator →