#1F1B82#1F1B82

#1F1B82 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.6% C 0.163 H 273.5°. Best body text is #FFFFFF at 13.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F1B82
RGB	rgb(31, 27, 130)
HSL	hsl(242, 66%, 31%)
HSV	hsv(242, 79%, 51%)
CMYK	cmyk(76.2%, 79.2%, 0%, 49%)
CIE-LAB	lab(18.74, 37.41, -56.33)
CIE-LCH	lch(18.74, 67.62, 303.59°)
OKLab	oklab(31.57% 0.0099 -0.163)
OKLCH	oklch(31.57% 0.163 273.5)
XYZ	xyz(4.9849, 2.6864, 21.3706)
Luminance	0.0269 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1B82 #7E821B

analogous

#1B4A82 #1F1B82 #521B82

triadic

#1F1B82 #821F1B #1B821F

tetradic

#1F1B82 #821B4A #7E821B #1B8252

square

#1F1B82 #821B4A #7E821B #1B8252

split-complementary

#1F1B82 #82521B #4A821B

monochromatic

#07061D #13104F #1F1B82 #2B26B5 #4640D7

Accessibility & contrast

On white

13.66

#1F1B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1F1B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1B82

13.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1B82	#FFFFFF	#000000	##FFFFFF
##1F1B82	1.00	13.66	1.54	13.66
#FFFFFF	13.66	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003285

Deuteranopia (green-blind)

#002980

Tritanopia (blue-blind)

#003A4E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f1b82;
/* rgb */ color: rgb(31, 27, 130);
/* oklch */ color: oklch(31.6% 0.163 273.5);

Tailwind

colors: {
  custom: {
    50: '#6d59a7',
    500: '#1f1b82',
    950: '#000000',
  },
}

SCSS

$custom: #1f1b82;
$custom-light: #6d59a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1b82",
  "rgb": {
    "r": 31,
    "g": 27,
    "b": 130
  },
  "hsl": {
    "h": 242.33,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.31567,
    "c": 0.16328,
    "h": 273.5
  },
  "luminance": 0.02687
}

Semantic roles & 50–950 ramp

primary

#1F1B82

secondary

#B1B643

accent

#E93FE2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F1B82

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

Preview Lab → · Contrast checker → · Palette generator →