#1F1180#1F1180

#1F1180 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.1% C 0.169 H 274.8°. Best body text is #FFFFFF at 14.48:1 contrast (WCAG AA passes).

Color values

HEX	#1F1180
RGB	rgb(31, 17, 128)
HSL	hsl(248, 77%, 28%)
HSV	hsv(248, 87%, 50%)
CMYK	cmyk(75.8%, 86.7%, 0%, 49.8%)
CIE-LAB	lab(16.75, 41.85, -58.36)
CIE-LCH	lch(16.75, 71.81, 305.64°)
OKLab	oklab(30.11% 0.0142 -0.1687)
OKLCH	oklch(30.11% 0.169 274.8)
XYZ	xyz(4.6605, 2.2503, 20.6066)
Luminance	0.0225 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1180 #728011

analogous

#113A80 #1F1180 #561180

triadic

#1F1180 #801F11 #11801F

tetradic

#1F1180 #80113A #728011 #118056

square

#1F1180 #80113A #728011 #118056

split-complementary

#1F1180 #805611 #3A8011

monochromatic

#07041B #120A4A #1F1180 #2C18B6 #4029E3

Accessibility & contrast

On white

14.48

#1F1180 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#1F1180 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1180

14.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1180	#FFFFFF	#000000	##FFFFFF
##1F1180	1.00	14.48	1.45	14.48
#FFFFFF	14.48	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E83

Deuteranopia (green-blind)

#00247E

Tritanopia (blue-blind)

#00354B

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f1180;
/* rgb */ color: rgb(31, 17, 128);
/* oklch */ color: oklch(30.1% 0.169 274.8);

Tailwind

colors: {
  custom: {
    50: '#6d54a6',
    500: '#1f1180',
    950: '#000000',
  },
}

SCSS

$custom: #1f1180;
$custom-light: #6d54a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1180",
  "rgb": {
    "r": 31,
    "g": 17,
    "b": 128
  },
  "hsl": {
    "h": 247.568,
    "s": 76.552,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30111,
    "c": 0.16931,
    "h": 274.8
  },
  "luminance": 0.02251
}

Semantic roles & 50–950 ramp

primary

#1F1180

secondary

#A6B637

accent

#F335DB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1F1180

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

Preview Lab → · Contrast checker → · Palette generator →