#1F1579#1F1579

#1F1579 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.7% C 0.158 H 275.4°. Best body text is #FFFFFF at 14.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F1579
RGB	rgb(31, 21, 121)
HSL	hsl(246, 70%, 28%)
HSV	hsv(246, 83%, 47%)
CMYK	cmyk(74.4%, 82.6%, 0%, 52.5%)
CIE-LAB	lab(16.54, 37.67, -54.24)
CIE-LCH	lch(16.54, 66.03, 304.78°)
OKLab	oklab(29.72% 0.0148 -0.1568)
OKLCH	oklch(29.72% 0.158 275.4)
XYZ	xyz(4.2833, 2.2077, 18.2858)
Luminance	0.0221 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1579 #6F7915

analogous

#153D79 #1F1579 #511579

triadic

#1F1579 #791F15 #15791F

tetradic

#1F1579 #79153D #6F7915 #157951

square

#1F1579 #79153D #6F7915 #157951

split-complementary

#1F1579 #795115 #3D7915

monochromatic

#07051A #120C45 #1F1579 #2C1EAD #3F2EDB

Accessibility & contrast

On white

14.57

#1F1579 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1F1579 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1579

14.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1579	#FFFFFF	#000000	##FFFFFF
##1F1579	1.00	14.57	1.44	14.57
#FFFFFF	14.57	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7C

Deuteranopia (green-blind)

#002477

Tritanopia (blue-blind)

#003447

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f1579;
/* rgb */ color: rgb(31, 21, 121);
/* oklch */ color: oklch(29.7% 0.158 275.4);

Tailwind

colors: {
  custom: {
    50: '#6b55a1',
    500: '#1f1579',
    950: '#000000',
  },
}

SCSS

$custom: #1f1579;
$custom-light: #6b55a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1579",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 121
  },
  "hsl": {
    "h": 246,
    "s": 70.423,
    "l": 27.843
  },
  "oklch": {
    "l": 0.29716,
    "c": 0.15752,
    "h": 275.4
  },
  "luminance": 0.02208
}

Semantic roles & 50–950 ramp

primary

#1F1579

secondary

#A3AF3B

accent

#ED3BDB

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1F1579

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

Preview Lab → · Contrast checker → · Palette generator →