#1F1671#1F1671

#1F1671 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.9% C 0.146 H 276.5°. Best body text is #FFFFFF at 14.88:1 contrast (WCAG AA passes).

Color values

HEX	#1F1671
RGB	rgb(31, 22, 113)
HSL	hsl(246, 67%, 26%)
HSV	hsv(246, 81%, 44%)
CMYK	cmyk(72.6%, 80.5%, 0%, 55.7%)
CIE-LAB	lab(15.78, 34.44, -50.33)
CIE-LCH	lch(15.78, 60.99, 304.39°)
OKLab	oklab(28.91% 0.0165 -0.1455)
OKLCH	oklch(28.91% 0.146 276.5)
XYZ	xyz(3.8316, 2.0570, 15.8147)
Luminance	0.0206 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1671 #687116

analogous

#163B71 #1F1671 #4D1671

triadic

#1F1671 #711F16 #16711F

tetradic

#1F1671 #71163B #687116 #16714D

square

#1F1671 #71163B #687116 #16714D

split-complementary

#1F1671 #714D16 #3B7116

monochromatic

#07051A #110C3E #1F1671 #2D20A4 #3C2CD6

Accessibility & contrast

On white

14.88

#1F1671 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1F1671 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1671

14.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1671	#FFFFFF	#000000	##FFFFFF
##1F1671	1.00	14.88	1.41	14.88
#FFFFFF	14.88	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B74

Deuteranopia (green-blind)

#00236F

Tritanopia (blue-blind)

#003143

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f1671;
/* rgb */ color: rgb(31, 22, 113);
/* oklch */ color: oklch(28.9% 0.146 276.5);

Tailwind

colors: {
  custom: {
    50: '#69559b',
    500: '#1f1671',
    950: '#000000',
  },
}

SCSS

$custom: #1f1671;
$custom-light: #69559b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1671",
  "rgb": {
    "r": 31,
    "g": 22,
    "b": 113
  },
  "hsl": {
    "h": 245.934,
    "s": 67.407,
    "l": 26.471
  },
  "oklch": {
    "l": 0.28908,
    "c": 0.14641,
    "h": 276.5
  },
  "luminance": 0.02057
}

Semantic roles & 50–950 ramp

primary

#1F1671

secondary

#9CA73C

accent

#EA3ED9

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F1671

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

Preview Lab → · Contrast checker → · Palette generator →