#133D7B#133D7B

#133D7B is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.9% C 0.115 H 258.6°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#133D7B
RGB	rgb(19, 61, 123)
HSL	hsl(216, 73%, 28%)
HSV	hsv(216, 85%, 48%)
CMYK	cmyk(84.6%, 50.4%, 0%, 51.8%)
CIE-LAB	lab(26.46, 10.49, -39.31)
CIE-LCH	lch(26.46, 40.69, 284.95°)
OKLab	oklab(36.93% -0.0227 -0.1131)
OKLCH	oklch(36.93% 0.115 258.6)
XYZ	xyz(5.5111, 4.9053, 19.3914)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133D7B #7B5113

analogous

#13717B #133D7B #1D137B

triadic

#133D7B #7B133D #3D7B13

tetradic

#133D7B #7B1371 #7B5113 #137B1D

square

#133D7B #7B1371 #7B5113 #137B1D

split-complementary

#133D7B #7B1D13 #717B13

monochromatic

#040D1B #0B2346 #133D7B #1B57B0 #2A73DE

Accessibility & contrast

On white

10.60

#133D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#133D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133D7B

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133D7B	#FFFFFF	#000000	##FFFFFF
##133D7B	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19447D

Deuteranopia (green-blind)

#003A7A

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #133d7b;
/* rgb */ color: rgb(19, 61, 123);
/* oklch */ color: oklch(36.9% 0.115 258.6);

Tailwind

colors: {
  custom: {
    50: '#6471a2',
    500: '#133d7b',
    950: '#000000',
  },
}

SCSS

$custom: #133d7b;
$custom-light: #6471a2;
$custom-dark: #000000;

JSON

{
  "hex": "#133d7b",
  "rgb": {
    "r": 19,
    "g": 61,
    "b": 123
  },
  "hsl": {
    "h": 215.769,
    "s": 73.239,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36933,
    "c": 0.11534,
    "h": 258.6
  },
  "luminance": 0.04906
}

Semantic roles & 50–950 ramp

primary

#133D7B

secondary

#B18039

accent

#A638F0

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #133D7B

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

Preview Lab → · Contrast checker → · Palette generator →