#131F5F#131F5F

#131F5F is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.7% C 0.114 H 269.1°. Best body text is #FFFFFF at 15.12:1 contrast (WCAG AA passes).

Color values

HEX	#131F5F
RGB	rgb(19, 31, 95)
HSL	hsl(231, 67%, 22%)
HSV	hsv(231, 80%, 37%)
CMYK	cmyk(80%, 67.4%, 0%, 62.7%)
CIE-LAB	lab(15.19, 20.40, -39.51)
CIE-LCH	lch(15.19, 44.47, 297.31°)
OKLab	oklab(27.69% -0.0017 -0.1142)
OKLCH	oklch(27.69% 0.114 269.1)
XYZ	xyz(2.8234, 1.9443, 11.0507)
Luminance	0.0194 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131F5F #5F5313

analogous

#13455F #131F5F #2D135F

triadic

#131F5F #5F131F #1F5F13

tetradic

#131F5F #5F1345 #5F5313 #135F2D

square

#131F5F #5F1345 #5F5313 #135F2D

split-complementary

#131F5F #5F2D13 #455F13

monochromatic

#05081A #090E2C #131F5F #1D3092 #2740C5

Accessibility & contrast

On white

15.12

#131F5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#131F5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131F5F

15.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131F5F	#FFFFFF	#000000	##FFFFFF
##131F5F	1.00	15.12	1.39	15.12
#FFFFFF	15.12	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A61

Deuteranopia (green-blind)

#00235E

Tritanopia (blue-blind)

#00303B

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #131f5f;
/* rgb */ color: rgb(19, 31, 95);
/* oklch */ color: oklch(27.7% 0.114 269.1);

Tailwind

colors: {
  custom: {
    50: '#5e5a8d',
    500: '#131f5f',
    950: '#000000',
  },
}

SCSS

$custom: #131f5f;
$custom-light: #5e5a8d;
$custom-dark: #000000;

JSON

{
  "hex": "#131f5f",
  "rgb": {
    "r": 19,
    "g": 31,
    "b": 95
  },
  "hsl": {
    "h": 230.526,
    "s": 66.667,
    "l": 22.353
  },
  "oklch": {
    "l": 0.2769,
    "c": 0.11422,
    "h": 269.1
  },
  "luminance": 0.01945
}

Semantic roles & 50–950 ramp

primary

#131F5F

secondary

#978837

accent

#CF3EEA

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #131F5F

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

Preview Lab → · Contrast checker → · Palette generator →