#1F1D87#1F1D87

#1F1D87 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.4% C 0.168 H 272.7°. Best body text is #FFFFFF at 13.26:1 contrast (WCAG AA passes).

Color values

HEX	#1F1D87
RGB	rgb(31, 29, 135)
HSL	hsl(241, 65%, 32%)
HSV	hsv(241, 79%, 53%)
CMYK	cmyk(77%, 78.5%, 0%, 47.1%)
CIE-LAB	lab(19.72, 37.99, -57.87)
CIE-LCH	lch(19.72, 69.23, 303.28°)
OKLab	oklab(32.42% 0.008 -0.1675)
OKLCH	oklch(32.42% 0.168 272.7)
XYZ	xyz(5.3761, 2.9187, 23.1970)
Luminance	0.0292 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1D87 #85871D

analogous

#1D5087 #1F1D87 #541D87

triadic

#1F1D87 #871F1D #1D871F

tetradic

#1F1D87 #871D50 #85871D #1D8754

square

#1F1D87 #871D50 #85871D #1D8754

split-complementary

#1F1D87 #87541D #50871D

monochromatic

#080722 #131255 #1F1D87 #2B28B9 #4A47D7

Accessibility & contrast

On white

13.26

#1F1D87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1F1D87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1D87

13.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1D87	#FFFFFF	#000000	##FFFFFF
##1F1D87	1.00	13.26	1.58	13.26
#FFFFFF	13.26	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358A

Deuteranopia (green-blind)

#002A85

Tritanopia (blue-blind)

#003D51

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f1d87;
/* rgb */ color: rgb(31, 29, 135);
/* oklch */ color: oklch(32.4% 0.168 272.7);

Tailwind

colors: {
  custom: {
    50: '#6e5bab',
    500: '#1f1d87',
    950: '#000000',
  },
}

SCSS

$custom: #1f1d87;
$custom-light: #6e5bab;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1d87",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 135
  },
  "hsl": {
    "h": 241.132,
    "s": 64.634,
    "l": 32.157
  },
  "oklch": {
    "l": 0.32423,
    "c": 0.16767,
    "h": 272.7
  },
  "luminance": 0.02919
}

Semantic roles & 50–950 ramp

primary

#1F1D87

secondary

#B7B946

accent

#E840E4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F1D87

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

Preview Lab → · Contrast checker → · Palette generator →