#131F4F#131F4F

#131F4F is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.1% C 0.090 H 268.8°. Best body text is #FFFFFF at 15.71:1 contrast (WCAG AA passes).

Color values

HEX	#131F4F
RGB	rgb(19, 31, 79)
HSL	hsl(228, 61%, 19%)
HSV	hsv(228, 76%, 31%)
CMYK	cmyk(75.9%, 60.8%, 0%, 69%)
CIE-LAB	lab(13.73, 13.70, -31.12)
CIE-LCH	lch(13.73, 34.00, 293.76°)
OKLab	oklab(26.14% -0.0019 -0.0896)
OKLCH	oklch(26.14% 0.09 268.8)
XYZ	xyz(2.1693, 1.6827, 7.6061)
Luminance	0.0168 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131F4F #4F4313

analogous

#133D4F #131F4F #25134F

triadic

#131F4F #4F131F #1F4F13

tetradic

#131F4F #4F133D #4F4313 #134F25

square

#131F4F #4F133D #4F4313 #134F25

split-complementary

#131F4F #4F2513 #3D4F13

monochromatic

#060A19 #070C1E #131F4F #1F3280 #2B46B2

Accessibility & contrast

On white

15.71

#131F4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#131F4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131F4F

15.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131F4F	#FFFFFF	#000000	##FFFFFF
##131F4F	1.00	15.71	1.34	15.71
#FFFFFF	15.71	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002651

Deuteranopia (green-blind)

#00204E

Tritanopia (blue-blind)

#002B33

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #131f4f;
/* rgb */ color: rgb(19, 31, 79);
/* oklch */ color: oklch(26.1% 0.090 268.8);

Tailwind

colors: {
  custom: {
    50: '#5a5a81',
    500: '#131f4f',
    950: '#000000',
  },
}

SCSS

$custom: #131f4f;
$custom-light: #5a5a81;
$custom-dark: #000000;

JSON

{
  "hex": "#131f4f",
  "rgb": {
    "r": 19,
    "g": 31,
    "b": 79
  },
  "hsl": {
    "h": 228,
    "s": 61.224,
    "l": 19.216
  },
  "oklch": {
    "l": 0.26141,
    "c": 0.08959,
    "h": 268.8
  },
  "luminance": 0.01683
}

Semantic roles & 50–950 ramp

primary

#131F4F

secondary

#887736

accent

#C443E4

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #131F4F

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

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