#1F2B7C#1F2B7C

#1F2B7C is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.6% C 0.137 H 270.5°. Best body text is #FFFFFF at 12.39:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B7C
RGB	rgb(31, 43, 124)
HSL	hsl(232, 60%, 30%)
HSV	hsv(232, 75%, 49%)
CMYK	cmyk(75%, 65.3%, 0%, 51.4%)
CIE-LAB	lab(21.85, 25.02, -47.42)
CIE-LCH	lch(21.85, 53.61, 297.82°)
OKLab	oklab(33.62% 0.0013 -0.137)
OKLCH	oklch(33.62% 0.137 270.5)
XYZ	xyz(5.0658, 3.4738, 19.4684)
Luminance	0.0347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B7C #7C701F

analogous

#1F597C #1F2B7C #411F7C

triadic

#1F2B7C #7C1F2B #2B7C1F

tetradic

#1F2B7C #7C1F59 #7C701F #1F7C41

square

#1F2B7C #7C1F59 #7C701F #1F7C41

split-complementary

#1F2B7C #7C411F #597C1F

monochromatic

#07091A #131A4B #1F2B7C #2B3CAD #4557D0

Accessibility & contrast

On white

12.39

#1F2B7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F2B7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B7C

12.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B7C	#FFFFFF	#000000	##FFFFFF
##1F2B7C	1.00	12.39	1.69	12.39
#FFFFFF	12.39	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00397F

Deuteranopia (green-blind)

#00307A

Tritanopia (blue-blind)

#00404F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2b7c;
/* rgb */ color: rgb(31, 43, 124);
/* oklch */ color: oklch(33.6% 0.137 270.5);

Tailwind

colors: {
  custom: {
    50: '#6964a3',
    500: '#1f2b7c',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b7c;
$custom-light: #6964a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b7c",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 124
  },
  "hsl": {
    "h": 232.258,
    "s": 60,
    "l": 30.392
  },
  "oklch": {
    "l": 0.33619,
    "c": 0.13699,
    "h": 270.5
  },
  "luminance": 0.03474
}

Semantic roles & 50–950 ramp

primary

#1F2B7C

secondary

#AFA248

accent

#CF45E3

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1F2B7C

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

Preview Lab → · Contrast checker → · Palette generator →