#133B7B#133B7B

#133B7B is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.5% C 0.118 H 259.7°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#133B7B
RGB	rgb(19, 59, 123)
HSL	hsl(217, 73%, 28%)
HSV	hsv(217, 85%, 48%)
CMYK	cmyk(84.6%, 52%, 0%, 51.8%)
CIE-LAB	lab(25.85, 11.90, -40.30)
CIE-LCH	lch(25.85, 42.02, 286.46°)
OKLab	oklab(36.46% -0.0211 -0.116)
OKLCH	oklch(36.46% 0.118 259.7)
XYZ	xyz(5.4064, 4.6958, 19.3565)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133B7B #7B5313

analogous

#136F7B #133B7B #1F137B

triadic

#133B7B #7B133B #3B7B13

tetradic

#133B7B #7B136F #7B5313 #137B1F

square

#133B7B #7B136F #7B5313 #137B1F

split-complementary

#133B7B #7B1F13 #6F7B13

monochromatic

#040D1B #0B2246 #133B7B #1B54B0 #2A6FDE

Accessibility & contrast

On white

10.83

#133B7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#133B7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133B7B

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133B7B	#FFFFFF	#000000	##FFFFFF
##133B7B	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13427D

Deuteranopia (green-blind)

#00397A

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #133b7b;
/* rgb */ color: rgb(19, 59, 123);
/* oklch */ color: oklch(36.5% 0.118 259.7);

Tailwind

colors: {
  custom: {
    50: '#6470a2',
    500: '#133b7b',
    950: '#000000',
  },
}

SCSS

$custom: #133b7b;
$custom-light: #6470a2;
$custom-dark: #000000;

JSON

{
  "hex": "#133b7b",
  "rgb": {
    "r": 19,
    "g": 59,
    "b": 123
  },
  "hsl": {
    "h": 216.923,
    "s": 73.239,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36462,
    "c": 0.11794,
    "h": 259.7
  },
  "luminance": 0.04696
}

Semantic roles & 50–950 ramp

primary

#133B7B

secondary

#B18339

accent

#A938F0

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #133B7B

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

Preview Lab → · Contrast checker → · Palette generator →