#1F137D#1F137D

#1F137D is a dark, vivid blue. Relative luminance 0.022; OKLCH L 30.0% C 0.164 H 275.1°. Best body text is #FFFFFF at 14.51:1 contrast (WCAG AA passes).

Color values

HEX	#1F137D
RGB	rgb(31, 19, 125)
HSL	hsl(247, 74%, 28%)
HSV	hsv(247, 85%, 49%)
CMYK	cmyk(75.2%, 84.8%, 0%, 51%)
CIE-LAB	lab(16.69, 39.97, -56.56)
CIE-LCH	lch(16.69, 69.26, 305.25°)
OKLab	oklab(29.96% 0.0145 -0.1635)
OKLCH	oklch(29.96% 0.164 275.1)
XYZ	xyz(4.4984, 2.2373, 19.5928)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F137D #717D13

analogous

#133C7D #1F137D #54137D

triadic

#1F137D #7D1F13 #137D1F

tetradic

#1F137D #7D133C #717D13 #137D54

square

#1F137D #7D133C #717D13 #137D54

split-complementary

#1F137D #7D5413 #3C7D13

monochromatic

#07041B #120B48 #1F137D #2C1BB2 #402CDF

Accessibility & contrast

On white

14.51

#1F137D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#1F137D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F137D

14.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F137D	#FFFFFF	#000000	##FFFFFF
##1F137D	1.00	14.51	1.45	14.51
#FFFFFF	14.51	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E80

Deuteranopia (green-blind)

#00247B

Tritanopia (blue-blind)

#003549

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f137d;
/* rgb */ color: rgb(31, 19, 125);
/* oklch */ color: oklch(30.0% 0.164 275.1);

Tailwind

colors: {
  custom: {
    50: '#6c55a4',
    500: '#1f137d',
    950: '#000000',
  },
}

SCSS

$custom: #1f137d;
$custom-light: #6c55a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f137d",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 125
  },
  "hsl": {
    "h": 246.792,
    "s": 73.611,
    "l": 28.235
  },
  "oklch": {
    "l": 0.29959,
    "c": 0.16416,
    "h": 275.1
  },
  "luminance": 0.02238
}

Semantic roles & 50–950 ramp

primary

#1F137D

secondary

#A5B339

accent

#F038DB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F137D

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

Preview Lab → · Contrast checker → · Palette generator →