#1F2A9C#1F2A9C

#1F2A9C is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.7% C 0.181 H 269.6°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A9C
RGB	rgb(31, 42, 156)
HSL	hsl(235, 67%, 37%)
HSV	hsv(235, 80%, 61%)
CMYK	cmyk(80.1%, 73.1%, 0%, 38.8%)
CIE-LAB	lab(24.79, 37.62, -62.51)
CIE-LCH	lch(24.79, 72.95, 301.04°)
OKLab	oklab(36.71% -0.0011 -0.181)
OKLCH	oklch(36.71% 0.181 269.6)
XYZ	xyz(7.3917, 4.3467, 31.8955)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A9C #9C911F

analogous

#1F699C #1F2A9C #531F9C

triadic

#1F2A9C #9C1F2A #2A9C1F

tetradic

#1F2A9C #9C1F69 #9C911F #1F9C53

square

#1F2A9C #9C1F69 #9C911F #1F9C53

split-complementary

#1F2A9C #9C531F #699C1F

monochromatic

#0B0F36 #151C69 #1F2A9C #2938CF #5863DE

Accessibility & contrast

On white

11.23

#1F2A9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1F2A9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A9C

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A9C	#FFFFFF	#000000	##FFFFFF
##1F2A9C	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00419F

Deuteranopia (green-blind)

#00359A

Tritanopia (blue-blind)

#004B60

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f2a9c;
/* rgb */ color: rgb(31, 42, 156);
/* oklch */ color: oklch(36.7% 0.181 269.6);

Tailwind

colors: {
  custom: {
    50: '#7264ba',
    500: '#1f2a9c',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a9c;
$custom-light: #7264ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a9c",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 156
  },
  "hsl": {
    "h": 234.72,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.36715,
    "c": 0.18105,
    "h": 269.6
  },
  "luminance": 0.04348
}

Semantic roles & 50–950 ramp

primary

#1F2A9C

secondary

#C1B855

accent

#DB3EEA

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #1F2A9C

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

Preview Lab → · Contrast checker → · Palette generator →