#1F2A8C#1F2A8C

#1F2A8C is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.0% C 0.160 H 270.3°. Best body text is #FFFFFF at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A8C
RGB	rgb(31, 42, 140)
HSL	hsl(234, 64%, 34%)
HSV	hsv(234, 78%, 55%)
CMYK	cmyk(77.9%, 70%, 0%, 45.1%)
CIE-LAB	lab(23.14, 31.77, -55.36)
CIE-LCH	lch(23.14, 63.83, 299.85°)
OKLab	oklab(35.03% 0.0007 -0.1602)
OKLCH	oklch(35.03% 0.16 270.3)
XYZ	xyz(6.1250, 3.8400, 25.2242)
Luminance	0.0384 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A8C #8C811F

analogous

#1F608C #1F2A8C #4A1F8C

triadic

#1F2A8C #8C1F2A #2A8C1F

tetradic

#1F2A8C #8C1F60 #8C811F #1F8C4A

square

#1F2A8C #8C1F60 #8C811F #1F8C4A

split-complementary

#1F2A8C #8C4A1F #608C1F

monochromatic

#090C28 #141B5A #1F2A8C #2A39BE #4E5CD8

Accessibility & contrast

On white

11.88

#1F2A8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1F2A8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A8C

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A8C	#FFFFFF	#000000	##FFFFFF
##1F2A8C	1.00	11.88	1.77	11.88
#FFFFFF	11.88	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8F

Deuteranopia (green-blind)

#00328A

Tritanopia (blue-blind)

#004557

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f2a8c;
/* rgb */ color: rgb(31, 42, 140);
/* oklch */ color: oklch(35.0% 0.160 270.3);

Tailwind

colors: {
  custom: {
    50: '#6e64af',
    500: '#1f2a8c',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a8c;
$custom-light: #6e64af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a8c",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 140
  },
  "hsl": {
    "h": 233.945,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.35029,
    "c": 0.16022,
    "h": 270.3
  },
  "luminance": 0.03841
}

Semantic roles & 50–950 ramp

primary

#1F2A8C

secondary

#BBAF4C

accent

#D641E7

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #1F2A8C

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

Preview Lab → · Contrast checker → · Palette generator →