#1F2C8A#1F2C8A

#1F2C8A is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.2% C 0.155 H 269.9°. Best body text is #FFFFFF at 11.76:1 contrast (WCAG AA passes).

Color values

HEX	#1F2C8A
RGB	rgb(31, 44, 138)
HSL	hsl(233, 63%, 33%)
HSV	hsv(233, 78%, 54%)
CMYK	cmyk(77.5%, 68.1%, 0%, 45.9%)
CIE-LAB	lab(23.43, 29.70, -53.63)
CIE-LCH	lch(23.43, 61.31, 298.98°)
OKLab	oklab(35.18% -0.0002 -0.1552)
OKLCH	oklch(35.18% 0.155 269.9)
XYZ	xyz(6.0516, 3.9270, 24.4789)
Luminance	0.0393 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2C8A #8A7D1F

analogous

#1F618A #1F2C8A #471F8A

triadic

#1F2C8A #8A1F2C #2C8A1F

tetradic

#1F2C8A #8A1F61 #8A7D1F #1F8A47

square

#1F2C8A #8A1F61 #8A7D1F #1F8A47

split-complementary

#1F2C8A #8A471F #618A1F

monochromatic

#090C26 #141C58 #1F2C8A #2A3CBC #4C5DD7

Accessibility & contrast

On white

11.76

#1F2C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1F2C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2C8A

11.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2C8A	#FFFFFF	#000000	##FFFFFF
##1F2C8A	1.00	11.76	1.79	11.76
#FFFFFF	11.76	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D8D

Deuteranopia (green-blind)

#003388

Tritanopia (blue-blind)

#004557

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f2c8a;
/* rgb */ color: rgb(31, 44, 138);
/* oklch */ color: oklch(35.2% 0.155 269.9);

Tailwind

colors: {
  custom: {
    50: '#6d65ad',
    500: '#1f2c8a',
    950: '#000000',
  },
}

SCSS

$custom: #1f2c8a;
$custom-light: #6d65ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2c8a",
  "rgb": {
    "r": 31,
    "g": 44,
    "b": 138
  },
  "hsl": {
    "h": 232.71,
    "s": 63.314,
    "l": 33.137
  },
  "oklch": {
    "l": 0.35183,
    "c": 0.15516,
    "h": 269.9
  },
  "luminance": 0.03928
}

Semantic roles & 50–950 ramp

primary

#1F2C8A

secondary

#BAAC4B

accent

#D241E6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #1F2C8A

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

Preview Lab → · Contrast checker → · Palette generator →