#1F218D#1F218D

#1F218D is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.7% C 0.171 H 271.7°. Best body text is #FFFFFF at 12.65:1 contrast (WCAG AA passes).

Color values

HEX	#1F218D
RGB	rgb(31, 33, 141)
HSL	hsl(239, 64%, 34%)
HSV	hsv(239, 78%, 55%)
CMYK	cmyk(78%, 76.6%, 0%, 44.7%)
CIE-LAB	lab(21.21, 37.74, -59.15)
CIE-LCH	lch(21.21, 70.16, 302.54°)
OKLab	oklab(33.68% 0.0051 -0.1712)
OKLCH	oklch(33.68% 0.171 271.7)
XYZ	xyz(5.9150, 3.3015, 25.5196)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F218D #8D8B1F

analogous

#1F588D #1F218D #541F8D

triadic

#1F218D #8D1F21 #218D1F

tetradic

#1F218D #8D1F58 #8D8B1F #1F8D54

square

#1F218D #8D1F58 #8D8B1F #1F8D54

split-complementary

#1F218D #8D541F #588D1F

monochromatic

#090A29 #14155B #1F218D #2A2DBF #4E51D8

Accessibility & contrast

On white

12.65

#1F218D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1F218D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F218D

12.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F218D	#FFFFFF	#000000	##FFFFFF
##1F218D	1.00	12.65	1.66	12.65
#FFFFFF	12.65	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003890

Deuteranopia (green-blind)

#002D8B

Tritanopia (blue-blind)

#004155

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f218d;
/* rgb */ color: rgb(31, 33, 141);
/* oklch */ color: oklch(33.7% 0.171 271.7);

Tailwind

colors: {
  custom: {
    50: '#6f5eb0',
    500: '#1f218d',
    950: '#000000',
  },
}

SCSS

$custom: #1f218d;
$custom-light: #6f5eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f218d",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 141
  },
  "hsl": {
    "h": 238.909,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.33682,
    "c": 0.17131,
    "h": 271.7
  },
  "luminance": 0.03302
}

Semantic roles & 50–950 ramp

primary

#1F218D

secondary

#BBB94D

accent

#E441E7

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090411

muted

#7B7980

Preview Lab

Preview with #1F218D

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

Preview Lab → · Contrast checker → · Palette generator →