#1F218F#1F218F

#1F218F is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.9% C 0.174 H 271.5°. Best body text is #FFFFFF at 12.56:1 contrast (WCAG AA passes).

Color values

HEX	#1F218F
RGB	rgb(31, 33, 143)
HSL	hsl(239, 64%, 34%)
HSV	hsv(239, 78%, 56%)
CMYK	cmyk(78.3%, 76.9%, 0%, 43.9%)
CIE-LAB	lab(21.44, 38.44, -60.02)
CIE-LCH	lch(21.44, 71.28, 302.63°)
OKLab	oklab(33.91% 0.0047 -0.1738)
OKLCH	oklch(33.91% 0.174 271.5)
XYZ	xyz(6.0652, 3.3615, 26.3105)
Luminance	0.0336 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F218F #8F8D1F

analogous

#1F598F #1F218F #551F8F

triadic

#1F218F #8F1F21 #218F1F

tetradic

#1F218F #8F1F59 #8F8D1F #1F8F55

square

#1F218F #8F1F59 #8F8D1F #1F8F55

split-complementary

#1F218F #8F551F #598F1F

monochromatic

#090A2A #14155D #1F218F #2A2DC1 #4F52D9

Accessibility & contrast

On white

12.56

#1F218F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1F218F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F218F

12.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F218F	#FFFFFF	#000000	##FFFFFF
##1F218F	1.00	12.56	1.67	12.56
#FFFFFF	12.56	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003992

Deuteranopia (green-blind)

#002E8D

Tritanopia (blue-blind)

#004156

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f218f;
/* rgb */ color: rgb(31, 33, 143);
/* oklch */ color: oklch(33.9% 0.174 271.5);

Tailwind

colors: {
  custom: {
    50: '#6f5eb1',
    500: '#1f218f',
    950: '#000000',
  },
}

SCSS

$custom: #1f218f;
$custom-light: #6f5eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f218f",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 143
  },
  "hsl": {
    "h": 238.929,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.33907,
    "c": 0.17384,
    "h": 271.5
  },
  "luminance": 0.03362
}

Semantic roles & 50–950 ramp

primary

#1F218F

secondary

#BCBA4E

accent

#E440E7

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1F218F

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

Preview Lab → · Contrast checker → · Palette generator →