#1F2F9C#1F2F9C

#1F2F9C is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.5% C 0.176 H 268.9°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F9C
RGB	rgb(31, 47, 156)
HSL	hsl(232, 67%, 37%)
HSV	hsv(232, 80%, 61%)
CMYK	cmyk(80.1%, 69.9%, 0%, 38.8%)
CIE-LAB	lab(25.93, 34.48, -60.62)
CIE-LCH	lch(25.93, 69.73, 299.63°)
OKLab	oklab(37.54% -0.0034 -0.1756)
OKLCH	oklch(37.54% 0.176 268.9)
XYZ	xyz(7.5803, 4.7238, 31.9583)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F9C #9C8C1F

analogous

#1F6E9C #1F2F9C #4E1F9C

triadic

#1F2F9C #9C1F2F #2F9C1F

tetradic

#1F2F9C #9C1F6E #9C8C1F #1F9C4E

square

#1F2F9C #9C1F6E #9C8C1F #1F9C4E

split-complementary

#1F2F9C #9C4E1F #6E9C1F

monochromatic

#0B1036 #152069 #1F2F9C #293ECF #5869DE

Accessibility & contrast

On white

10.80

#1F2F9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1F2F9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F9C

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F9C	#FFFFFF	#000000	##FFFFFF
##1F2F9C	1.00	10.80	1.95	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00439F

Deuteranopia (green-blind)

#00379A

Tritanopia (blue-blind)

#004D61

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1f2f9c;
/* rgb */ color: rgb(31, 47, 156);
/* oklch */ color: oklch(37.5% 0.176 268.9);

Tailwind

colors: {
  custom: {
    50: '#7168ba',
    500: '#1f2f9c',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f9c;
$custom-light: #7168ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f9c",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 156
  },
  "hsl": {
    "h": 232.32,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.37542,
    "c": 0.17558,
    "h": 268.9
  },
  "luminance": 0.04725
}

Semantic roles & 50–950 ramp

primary

#1F2F9C

secondary

#C1B455

accent

#D43EEA

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1F2F9C

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

Preview Lab → · Contrast checker → · Palette generator →