#1F218C#1F218C

#1F218C is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.6% C 0.170 H 271.8°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#1F218C
RGB	rgb(31, 33, 140)
HSL	hsl(239, 64%, 34%)
HSV	hsv(239, 78%, 55%)
CMYK	cmyk(77.9%, 76.4%, 0%, 45.1%)
CIE-LAB	lab(21.10, 37.39, -58.71)
CIE-LCH	lch(21.10, 69.61, 302.49°)
OKLab	oklab(33.57% 0.0052 -0.17)
OKLCH	oklch(33.57% 0.17 271.8)
XYZ	xyz(5.8410, 3.2718, 25.1296)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F218C #8C8A1F

analogous

#1F578C #1F218C #531F8C

triadic

#1F218C #8C1F21 #218C1F

tetradic

#1F218C #8C1F57 #8C8A1F #1F8C53

square

#1F218C #8C1F57 #8C8A1F #1F8C53

split-complementary

#1F218C #8C531F #578C1F

monochromatic

#090928 #14155A #1F218C #2A2DBE #4E50D8

Accessibility & contrast

On white

12.69

#1F218C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1F218C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F218C

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F218C	#FFFFFF	#000000	##FFFFFF
##1F218C	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388F

Deuteranopia (green-blind)

#002D8A

Tritanopia (blue-blind)

#004055

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f218c;
/* rgb */ color: rgb(31, 33, 140);
/* oklch */ color: oklch(33.6% 0.170 271.8);

Tailwind

colors: {
  custom: {
    50: '#6f5eaf',
    500: '#1f218c',
    950: '#000000',
  },
}

SCSS

$custom: #1f218c;
$custom-light: #6f5eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#1f218c",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 140
  },
  "hsl": {
    "h": 238.899,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.3357,
    "c": 0.17004,
    "h": 271.8
  },
  "luminance": 0.03272
}

Semantic roles & 50–950 ramp

primary

#1F218C

secondary

#BBB94C

accent

#E441E7

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #1F218C

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

Preview Lab → · Contrast checker → · Palette generator →