#133F8E#133F8E

#133F8E is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.9% C 0.140 H 261.1°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#133F8E
RGB	rgb(19, 63, 142)
HSL	hsl(219, 76%, 32%)
HSV	hsv(219, 87%, 56%)
CMYK	cmyk(86.6%, 55.6%, 0%, 44.3%)
CIE-LAB	lab(28.50, 17.04, -47.85)
CIE-LCH	lch(28.50, 50.79, 289.60°)
OKLab	oklab(38.94% -0.0217 -0.1381)
OKLCH	oklch(38.94% 0.14 261.1)
XYZ	xyz(6.9268, 5.6456, 26.3106)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133F8E #8E6213

analogous

#137D8E #133F8E #25138E

triadic

#133F8E #8E133F #3F8E13

tetradic

#133F8E #8E137D #8E6213 #138E25

square

#133F8E #8E137D #8E6213 #138E25

split-complementary

#133F8E #8E2513 #7D8E13

monochromatic

#050F22 #0C2758 #133F8E #1A57C4 #3775E4

Accessibility & contrast

On white

9.86

#133F8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#133F8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133F8E

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133F8E	#FFFFFF	#000000	##FFFFFF
##133F8E	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004991

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#005360

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #133f8e;
/* rgb */ color: rgb(19, 63, 142);
/* oklch */ color: oklch(38.9% 0.140 261.1);

Tailwind

colors: {
  custom: {
    50: '#6973b0',
    500: '#133f8e',
    950: '#000000',
  },
}

SCSS

$custom: #133f8e;
$custom-light: #6973b0;
$custom-dark: #000000;

JSON

{
  "hex": "#133f8e",
  "rgb": {
    "r": 19,
    "g": 63,
    "b": 142
  },
  "hsl": {
    "h": 218.537,
    "s": 76.398,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38944,
    "c": 0.13983,
    "h": 261.1
  },
  "luminance": 0.05646
}

Semantic roles & 50–950 ramp

primary

#133F8E

secondary

#C2923B

accent

#AF35F3

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #133F8E

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

Preview Lab → · Contrast checker → · Palette generator →