#1F1D79#1F1D79

#1F1D79 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.8% C 0.150 H 274.1°. Best body text is #FFFFFF at 13.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F1D79
RGB	rgb(31, 29, 121)
HSL	hsl(241, 61%, 29%)
HSV	hsv(241, 76%, 47%)
CMYK	cmyk(74.4%, 76%, 0%, 52.5%)
CIE-LAB	lab(18.14, 33.10, -51.59)
CIE-LCH	lch(18.14, 61.30, 302.68°)
OKLab	oklab(30.84% 0.0108 -0.1492)
OKLCH	oklch(30.84% 0.15 274.1)
XYZ	xyz(4.4545, 2.5501, 18.3429)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1D79 #77791D

analogous

#1D4979 #1F1D79 #4D1D79

triadic

#1F1D79 #791F1D #1D791F

tetradic

#1F1D79 #791D49 #77791D #1D794D

square

#1F1D79 #791D49 #77791D #1D794D

split-complementary

#1F1D79 #794D1D #49791D

monochromatic

#060619 #121148 #1F1D79 #2C29AA #433FD1

Accessibility & contrast

On white

13.91

#1F1D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1F1D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1D79

13.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1D79	#FFFFFF	#000000	##FFFFFF
##1F1D79	1.00	13.91	1.51	13.91
#FFFFFF	13.91	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317C

Deuteranopia (green-blind)

#002877

Tritanopia (blue-blind)

#003749

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1f1d79;
/* rgb */ color: rgb(31, 29, 121);
/* oklch */ color: oklch(30.8% 0.150 274.1);

Tailwind

colors: {
  custom: {
    50: '#6a5aa1',
    500: '#1f1d79',
    950: '#000000',
  },
}

SCSS

$custom: #1f1d79;
$custom-light: #6a5aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1d79",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 121
  },
  "hsl": {
    "h": 241.304,
    "s": 61.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30844,
    "c": 0.1496,
    "h": 274.1
  },
  "luminance": 0.02551
}

Semantic roles & 50–950 ramp

primary

#1F1D79

secondary

#ABAD45

accent

#E443E1

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1F1D79

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

Preview Lab → · Contrast checker → · Palette generator →