#1F218B#1F218B

#1F218B is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.5% C 0.169 H 271.8°. Best body text is #FFFFFF at 12.74:1 contrast (WCAG AA passes).

Color values

HEX	#1F218B
RGB	rgb(31, 33, 139)
HSL	hsl(239, 64%, 33%)
HSV	hsv(239, 78%, 55%)
CMYK	cmyk(77.7%, 76.3%, 0%, 45.5%)
CIE-LAB	lab(20.99, 37.04, -58.27)
CIE-LCH	lch(20.99, 69.05, 302.44°)
OKLab	oklab(33.46% 0.0054 -0.1687)
OKLCH	oklch(33.46% 0.169 271.8)
XYZ	xyz(5.7676, 3.2425, 24.7430)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F218B #8B891F

analogous

#1F578B #1F218B #531F8B

triadic

#1F218B #8B1F21 #218B1F

tetradic

#1F218B #8B1F57 #8B891F #1F8B53

square

#1F218B #8B1F57 #8B891F #1F8B53

split-complementary

#1F218B #8B531F #578B1F

monochromatic

#090927 #141559 #1F218B #2A2DBD #4D50D7

Accessibility & contrast

On white

12.74

#1F218B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1F218B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F218B

12.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F218B	#FFFFFF	#000000	##FFFFFF
##1F218B	1.00	12.74	1.65	12.74
#FFFFFF	12.74	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388E

Deuteranopia (green-blind)

#002D89

Tritanopia (blue-blind)

#004054

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f218b;
/* rgb */ color: rgb(31, 33, 139);
/* oklch */ color: oklch(33.5% 0.169 271.8);

Tailwind

colors: {
  custom: {
    50: '#6e5eae',
    500: '#1f218b',
    950: '#000000',
  },
}

SCSS

$custom: #1f218b;
$custom-light: #6e5eae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f218b",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 139
  },
  "hsl": {
    "h": 238.889,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.33458,
    "c": 0.16877,
    "h": 271.8
  },
  "luminance": 0.03243
}

Semantic roles & 50–950 ramp

primary

#1F218B

secondary

#BAB84C

accent

#E341E7

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F218B

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

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