#1F1D8A#1F1D8A

#1F1D8A is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.8% C 0.171 H 272.4°. Best body text is #FFFFFF at 13.12:1 contrast (WCAG AA passes).

Color values

HEX	#1F1D8A
RGB	rgb(31, 29, 138)
HSL	hsl(241, 65%, 33%)
HSV	hsv(241, 79%, 54%)
CMYK	cmyk(77.5%, 79%, 0%, 45.9%)
CIE-LAB	lab(20.06, 39.01, -59.18)
CIE-LCH	lch(20.06, 70.88, 303.39°)
OKLab	oklab(32.77% 0.0073 -0.1713)
OKLCH	oklch(32.77% 0.171 272.4)
XYZ	xyz(5.5903, 3.0044, 24.3251)
Luminance	0.0301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1D8A #888A1D

analogous

#1D518A #1F1D8A #551D8A

triadic

#1F1D8A #8A1F1D #1D8A1F

tetradic

#1F1D8A #8A1D51 #888A1D #1D8A55

square

#1F1D8A #8A1D51 #888A1D #1D8A55

split-complementary

#1F1D8A #8A551D #518A1D

monochromatic

#080825 #141257 #1F1D8A #2A28BD #4B49D9

Accessibility & contrast

On white

13.12

#1F1D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1F1D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1D8A

13.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1D8A	#FFFFFF	#000000	##FFFFFF
##1F1D8A	1.00	13.12	1.60	13.12
#FFFFFF	13.12	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368D

Deuteranopia (green-blind)

#002B88

Tritanopia (blue-blind)

#003E53

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f1d8a;
/* rgb */ color: rgb(31, 29, 138);
/* oklch */ color: oklch(32.8% 0.171 272.4);

Tailwind

colors: {
  custom: {
    50: '#6e5bad',
    500: '#1f1d8a',
    950: '#000000',
  },
}

SCSS

$custom: #1f1d8a;
$custom-light: #6e5bad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1d8a",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 138
  },
  "hsl": {
    "h": 241.101,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.32768,
    "c": 0.17144,
    "h": 272.4
  },
  "luminance": 0.03005
}

Semantic roles & 50–950 ramp

primary

#1F1D8A

secondary

#B9BB48

accent

#E840E5

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #1F1D8A

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

Preview Lab → · Contrast checker → · Palette generator →