#1F1379#1F1379

#1F1379 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.5% C 0.159 H 275.6°. Best body text is #FFFFFF at 14.71:1 contrast (WCAG AA passes).

Color values

HEX	#1F1379
RGB	rgb(31, 19, 121)
HSL	hsl(247, 73%, 27%)
HSV	hsv(247, 84%, 47%)
CMYK	cmyk(74.4%, 84.3%, 0%, 52.5%)
CIE-LAB	lab(16.19, 38.69, -54.82)
CIE-LCH	lch(16.19, 67.09, 305.21°)
OKLab	oklab(29.47% 0.0157 -0.1585)
OKLCH	oklch(29.47% 0.159 275.6)
XYZ	xyz(4.2480, 2.1371, 18.2741)
Luminance	0.0214 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1379 #6D7913

analogous

#133A79 #1F1379 #521379

triadic

#1F1379 #791F13 #13791F

tetradic

#1F1379 #79133A #6D7913 #137952

square

#1F1379 #79133A #6D7913 #137952

split-complementary

#1F1379 #795213 #3A7913

monochromatic

#07041A #110B44 #1F1379 #2D1BAE #3E29DD

Accessibility & contrast

On white

14.71

#1F1379 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1F1379 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1379

14.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1379	#FFFFFF	#000000	##FFFFFF
##1F1379	1.00	14.71	1.43	14.71
#FFFFFF	14.71	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C7C

Deuteranopia (green-blind)

#002477

Tritanopia (blue-blind)

#003347

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1f1379;
/* rgb */ color: rgb(31, 19, 121);
/* oklch */ color: oklch(29.5% 0.159 275.6);

Tailwind

colors: {
  custom: {
    50: '#6b54a1',
    500: '#1f1379',
    950: '#000000',
  },
}

SCSS

$custom: #1f1379;
$custom-light: #6b54a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1379",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 121
  },
  "hsl": {
    "h": 247.059,
    "s": 72.857,
    "l": 27.451
  },
  "oklch": {
    "l": 0.29473,
    "c": 0.15924,
    "h": 275.6
  },
  "luminance": 0.02138
}

Semantic roles & 50–950 ramp

primary

#1F1379

secondary

#A1AF39

accent

#F038DA

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1F1379

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

Preview Lab → · Contrast checker → · Palette generator →