#1F1779#1F1779

#1F1779 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.0% C 0.156 H 275.1°. Best body text is #FFFFFF at 14.41:1 contrast (WCAG AA passes).

Color values

HEX	#1F1779
RGB	rgb(31, 23, 121)
HSL	hsl(245, 68%, 28%)
HSV	hsv(245, 81%, 47%)
CMYK	cmyk(74.4%, 81%, 0%, 52.5%)
CIE-LAB	lab(16.91, 36.59, -53.62)
CIE-LCH	lch(16.91, 64.92, 304.31°)
OKLab	oklab(29.98% 0.0139 -0.1551)
OKLCH	oklch(29.98% 0.156 275.1)
XYZ	xyz(4.3215, 2.2842, 18.2986)
Luminance	0.0228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1779 #717917

analogous

#174079 #1F1779 #501779

triadic

#1F1779 #791F17 #17791F

tetradic

#1F1779 #791740 #717917 #177950

square

#1F1779 #791740 #717917 #177950

split-complementary

#1F1779 #795017 #407917

monochromatic

#07051A #120D46 #1F1779 #2C21AC #4032D8

Accessibility & contrast

On white

14.41

#1F1779 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#1F1779 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1779

14.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1779	#FFFFFF	#000000	##FFFFFF
##1F1779	1.00	14.41	1.46	14.41
#FFFFFF	14.41	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7C

Deuteranopia (green-blind)

#002577

Tritanopia (blue-blind)

#003548

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1f1779;
/* rgb */ color: rgb(31, 23, 121);
/* oklch */ color: oklch(30.0% 0.156 275.1);

Tailwind

colors: {
  custom: {
    50: '#6b56a1',
    500: '#1f1779',
    950: '#000000',
  },
}

SCSS

$custom: #1f1779;
$custom-light: #6b56a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1779",
  "rgb": {
    "r": 31,
    "g": 23,
    "b": 121
  },
  "hsl": {
    "h": 244.898,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.29975,
    "c": 0.15568,
    "h": 275.1
  },
  "luminance": 0.02285
}

Semantic roles & 50–950 ramp

primary

#1F1779

secondary

#A5AE3E

accent

#EB3DDD

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1F1779

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

Preview Lab → · Contrast checker → · Palette generator →