#1F1D72#1F1D72

#1F1D72 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.1% C 0.140 H 275.0°. Best body text is #FFFFFF at 14.22:1 contrast (WCAG AA passes).

Color values

HEX	#1F1D72
RGB	rgb(31, 29, 114)
HSL	hsl(241, 59%, 28%)
HSV	hsv(241, 75%, 45%)
CMYK	cmyk(72.8%, 74.6%, 0%, 55.3%)
CIE-LAB	lab(17.39, 30.59, -48.33)
CIE-LCH	lch(17.39, 57.20, 302.33°)
OKLab	oklab(30.08% 0.0121 -0.1397)
OKLCH	oklch(30.08% 0.14 275)
XYZ	xyz(4.0407, 2.3846, 16.1636)
Luminance	0.0238 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1D72 #70721D

analogous

#1D4572 #1F1D72 #491D72

triadic

#1F1D72 #721F1D #1D721F

tetradic

#1F1D72 #721D45 #70721D #1D7249

square

#1F1D72 #721D45 #70721D #1D7249

split-complementary

#1F1D72 #72491D #45721D

monochromatic

#070618 #121141 #1F1D72 #2C29A3 #3F3CCD

Accessibility & contrast

On white

14.22

#1F1D72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1F1D72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1D72

14.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1D72	#FFFFFF	#000000	##FFFFFF
##1F1D72	1.00	14.22	1.48	14.22
#FFFFFF	14.22	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F75

Deuteranopia (green-blind)

#002770

Tritanopia (blue-blind)

#003545

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1f1d72;
/* rgb */ color: rgb(31, 29, 114);
/* oklch */ color: oklch(30.1% 0.140 275.0);

Tailwind

colors: {
  custom: {
    50: '#685a9b',
    500: '#1f1d72',
    950: '#000000',
  },
}

SCSS

$custom: #1f1d72;
$custom-light: #685a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1d72",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 114
  },
  "hsl": {
    "h": 241.412,
    "s": 59.441,
    "l": 28.039
  },
  "oklch": {
    "l": 0.30078,
    "c": 0.14022,
    "h": 275
  },
  "luminance": 0.02385
}

Semantic roles & 50–950 ramp

primary

#1F1D72

secondary

#A4A645

accent

#E345DF

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1F1D72

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

Preview Lab → · Contrast checker → · Palette generator →