#1F219D#1F219D

#1F219D is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.5% C 0.191 H 270.6°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F219D
RGB	rgb(31, 33, 157)
HSL	hsl(239, 67%, 37%)
HSV	hsv(239, 80%, 62%)
CMYK	cmyk(80.3%, 79%, 0%, 38.4%)
CIE-LAB	lab(23.04, 43.21, -66.00)
CIE-LCH	lch(23.04, 78.89, 303.21°)
OKLab	oklab(35.51% 0.002 -0.1911)
OKLCH	oklch(35.51% 0.191 270.6)
XYZ	xyz(7.1927, 3.8125, 32.2486)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F219D #9D9B1F

analogous

#1F609D #1F219D #5C1F9D

triadic

#1F219D #9D1F21 #219D1F

tetradic

#1F219D #9D1F60 #9D9B1F #1F9D5C

square

#1F219D #9D1F60 #9D9B1F #1F9D5C

split-complementary

#1F219D #9D5C1F #609D1F

monochromatic

#0B0C37 #15166A #1F219D #292CD0 #585ADE

Accessibility & contrast

On white

11.91

#1F219D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1F219D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F219D

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F219D	#FFFFFF	#000000	##FFFFFF
##1F219D	1.00	11.91	1.76	11.91
#FFFFFF	11.91	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA0

Deuteranopia (green-blind)

#00309B

Tritanopia (blue-blind)

#00475E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f219d;
/* rgb */ color: rgb(31, 33, 157);
/* oklch */ color: oklch(35.5% 0.191 270.6);

Tailwind

colors: {
  custom: {
    50: '#735fbb',
    500: '#1f219d',
    950: '#000000',
  },
}

SCSS

$custom: #1f219d;
$custom-light: #735fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f219d",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 157
  },
  "hsl": {
    "h": 239.048,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.3551,
    "c": 0.19114,
    "h": 270.6
  },
  "luminance": 0.03813
}

Semantic roles & 50–950 ramp

primary

#1F219D

secondary

#C2C056

accent

#E73EEA

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #1F219D

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

Preview Lab → · Contrast checker → · Palette generator →