#133B74#133B74

#133B74 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.9% C 0.108 H 258.0°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#133B74
RGB	rgb(19, 59, 116)
HSL	hsl(215, 72%, 26%)
HSV	hsv(215, 84%, 45%)
CMYK	cmyk(83.6%, 49.1%, 0%, 54.5%)
CIE-LAB	lab(25.34, 8.95, -36.69)
CIE-LCH	lch(25.34, 37.77, 283.70°)
OKLab	oklab(35.91% -0.0223 -0.1054)
OKLCH	oklch(35.91% 0.108 258)
XYZ	xyz(4.9837, 4.5267, 17.1307)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133B74 #744C13

analogous

#136C74 #133B74 #1C1374

triadic

#133B74 #74133B #3B7413

tetradic

#133B74 #74136C #744C13 #13741C

square

#133B74 #74136C #744C13 #13741C

split-complementary

#133B74 #741C13 #6C7413

monochromatic

#040D1A #0A203F #133B74 #1C56A9 #2671DB

Accessibility & contrast

On white

11.02

#133B74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#133B74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133B74

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133B74	#FFFFFF	#000000	##FFFFFF
##133B74	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4176

Deuteranopia (green-blind)

#013873

Tritanopia (blue-blind)

#004952

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #133b74;
/* rgb */ color: rgb(19, 59, 116);
/* oklch */ color: oklch(35.9% 0.108 258.0);

Tailwind

colors: {
  custom: {
    50: '#62709c',
    500: '#133b74',
    950: '#000000',
  },
}

SCSS

$custom: #133b74;
$custom-light: #62709c;
$custom-dark: #000000;

JSON

{
  "hex": "#133b74",
  "rgb": {
    "r": 19,
    "g": 59,
    "b": 116
  },
  "hsl": {
    "h": 215.258,
    "s": 71.852,
    "l": 26.471
  },
  "oklch": {
    "l": 0.35909,
    "c": 0.10774,
    "h": 258
  },
  "luminance": 0.04527
}

Semantic roles & 50–950 ramp

primary

#133B74

secondary

#AA7B38

accent

#A439EF

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #133B74

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

Preview Lab → · Contrast checker → · Palette generator →