#131F4E#131F4E

#131F4E is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.1% C 0.088 H 268.7°. Best body text is #FFFFFF at 15.75:1 contrast (WCAG AA passes).

Color values

HEX	#131F4E
RGB	rgb(19, 31, 78)
HSL	hsl(228, 61%, 19%)
HSV	hsv(228, 76%, 31%)
CMYK	cmyk(75.6%, 60.3%, 0%, 69.4%)
CIE-LAB	lab(13.64, 13.28, -30.57)
CIE-LCH	lch(13.64, 33.33, 293.48°)
OKLab	oklab(26.05% -0.0019 -0.088)
OKLCH	oklch(26.05% 0.088 268.7)
XYZ	xyz(2.1332, 1.6683, 7.4158)
Luminance	0.0167 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131F4E #4E4213

analogous

#133D4E #131F4E #25134E

triadic

#131F4E #4E131F #1F4E13

tetradic

#131F4E #4E133D #4E4213 #134E25

square

#131F4E #4E133D #4E4213 #134E25

split-complementary

#131F4E #4E2513 #3D4E13

monochromatic

#060A19 #070B1D #131F4E #1F337F #2B46B0

Accessibility & contrast

On white

15.75

#131F4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#131F4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131F4E

15.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131F4E	#FFFFFF	#000000	##FFFFFF
##131F4E	1.00	15.75	1.33	15.75
#FFFFFF	15.75	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002650

Deuteranopia (green-blind)

#00204D

Tritanopia (blue-blind)

#002A33

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #131f4e;
/* rgb */ color: rgb(19, 31, 78);
/* oklch */ color: oklch(26.1% 0.088 268.7);

Tailwind

colors: {
  custom: {
    50: '#5a5a80',
    500: '#131f4e',
    950: '#000000',
  },
}

SCSS

$custom: #131f4e;
$custom-light: #5a5a80;
$custom-dark: #000000;

JSON

{
  "hex": "#131f4e",
  "rgb": {
    "r": 19,
    "g": 31,
    "b": 78
  },
  "hsl": {
    "h": 227.797,
    "s": 60.825,
    "l": 19.02
  },
  "oklch": {
    "l": 0.2605,
    "c": 0.08799,
    "h": 268.7
  },
  "luminance": 0.01668
}

Semantic roles & 50–950 ramp

primary

#131F4E

secondary

#877636

accent

#C344E4

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #131F4E

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

Preview Lab → · Contrast checker → · Palette generator →