#1F228C#1F228C

#1F228C is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.7% C 0.169 H 271.6°. Best body text is #FFFFFF at 12.61:1 contrast (WCAG AA passes).

Color values

HEX	#1F228C
RGB	rgb(31, 34, 140)
HSL	hsl(238, 64%, 34%)
HSV	hsv(238, 78%, 55%)
CMYK	cmyk(77.9%, 75.7%, 0%, 45.1%)
CIE-LAB	lab(21.31, 36.80, -58.36)
CIE-LCH	lch(21.31, 68.99, 302.23°)
OKLab	oklab(33.72% 0.0048 -0.1689)
OKLCH	oklch(33.72% 0.169 271.6)
XYZ	xyz(5.8691, 3.3282, 25.1389)
Luminance	0.0333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F228C #8C891F

analogous

#1F588C #1F228C #521F8C

triadic

#1F228C #8C1F22 #228C1F

tetradic

#1F228C #8C1F58 #8C891F #1F8C52

square

#1F228C #8C1F58 #8C891F #1F8C52

split-complementary

#1F228C #8C521F #588C1F

monochromatic

#090A28 #14165A #1F228C #2A2EBE #4E51D8

Accessibility & contrast

On white

12.61

#1F228C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1F228C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F228C

12.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F228C	#FFFFFF	#000000	##FFFFFF
##1F228C	1.00	12.61	1.67	12.61
#FFFFFF	12.61	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388F

Deuteranopia (green-blind)

#002E8A

Tritanopia (blue-blind)

#004155

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f228c;
/* rgb */ color: rgb(31, 34, 140);
/* oklch */ color: oklch(33.7% 0.169 271.6);

Tailwind

colors: {
  custom: {
    50: '#6e5eaf',
    500: '#1f228c',
    950: '#000000',
  },
}

SCSS

$custom: #1f228c;
$custom-light: #6e5eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#1f228c",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 140
  },
  "hsl": {
    "h": 238.349,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.3372,
    "c": 0.16902,
    "h": 271.6
  },
  "luminance": 0.03329
}

Semantic roles & 50–950 ramp

primary

#1F228C

secondary

#BBB84C

accent

#E241E7

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #1F228C

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

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