#133B58#133B58

#133B58 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.0% C 0.068 H 243.8°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#133B58
RGB	rgb(19, 59, 88)
HSL	hsl(205, 64%, 21%)
HSV	hsv(205, 78%, 35%)
CMYK	cmyk(78.4%, 33%, 0%, 65.5%)
CIE-LAB	lab(23.57, -2.77, -21.42)
CIE-LCH	lch(23.57, 21.60, 262.64°)
OKLab	oklab(33.96% -0.0298 -0.0606)
OKLCH	oklch(33.96% 0.068 243.8)
XYZ	xyz(3.5933, 3.9706, 9.8076)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133B58 #583013

analogous

#135852 #133B58 #131858

triadic

#133B58 #58133B #3B5813

tetradic

#133B58 #521358 #583013 #185813

square

#133B58 #521358 #583013 #185813

split-complementary

#133B58 #581318 #585213

monochromatic

#051119 #081926 #133B58 #1E5D8A #297EBD

Accessibility & contrast

On white

11.70

#133B58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#133B58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133B58

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133B58	#FFFFFF	#000000	##FFFFFF
##133B58	1.00	11.70	1.79	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3C59

Deuteranopia (green-blind)

#243557

Tritanopia (blue-blind)

#004245

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #133b58;
/* rgb */ color: rgb(19, 59, 88);
/* oklch */ color: oklch(34.0% 0.068 243.8);

Tailwind

colors: {
  custom: {
    50: '#5b7087',
    500: '#133b58',
    950: '#000000',
  },
}

SCSS

$custom: #133b58;
$custom-light: #5b7087;
$custom-dark: #000000;

JSON

{
  "hex": "#133b58",
  "rgb": {
    "r": 19,
    "g": 59,
    "b": 88
  },
  "hsl": {
    "h": 205.217,
    "s": 64.486,
    "l": 20.98
  },
  "oklch": {
    "l": 0.33957,
    "c": 0.06754,
    "h": 243.8
  },
  "luminance": 0.03971
}

Semantic roles & 50–950 ramp

primary

#133B58

secondary

#905C37

accent

#8740E7

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #133B58

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

Preview Lab → · Contrast checker → · Palette generator →