#1F2A7E#1F2A7E

#1F2A7E is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.6% C 0.141 H 270.8°. Best body text is #FFFFFF at 12.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A7E
RGB	rgb(31, 42, 126)
HSL	hsl(233, 61%, 31%)
HSV	hsv(233, 75%, 49%)
CMYK	cmyk(75.4%, 66.7%, 0%, 50.6%)
CIE-LAB	lab(21.77, 26.48, -48.81)
CIE-LCH	lch(21.77, 55.53, 298.48°)
OKLab	oklab(33.62% 0.0019 -0.1411)
OKLCH	oklch(33.62% 0.141 270.8)
XYZ	xyz(5.1577, 3.4531, 20.1293)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A7E #7E731F

analogous

#1F597E #1F2A7E #431F7E

triadic

#1F2A7E #7E1F2A #2A7E1F

tetradic

#1F2A7E #7E1F59 #7E731F #1F7E43

square

#1F2A7E #7E1F59 #7E731F #1F7E43

split-complementary

#1F2A7E #7E431F #597E1F

monochromatic

#07091C #131A4D #1F2A7E #2B3AAF #4656D1

Accessibility & contrast

On white

12.42

#1F2A7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F2A7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A7E

12.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A7E	#FFFFFF	#000000	##FFFFFF
##1F2A7E	1.00	12.42	1.69	12.42
#FFFFFF	12.42	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003981

Deuteranopia (green-blind)

#00307C

Tritanopia (blue-blind)

#004050

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2a7e;
/* rgb */ color: rgb(31, 42, 126);
/* oklch */ color: oklch(33.6% 0.141 270.8);

Tailwind

colors: {
  custom: {
    50: '#6a63a4',
    500: '#1f2a7e',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a7e;
$custom-light: #6a63a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a7e",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 126
  },
  "hsl": {
    "h": 233.053,
    "s": 60.51,
    "l": 30.784
  },
  "oklch": {
    "l": 0.33621,
    "c": 0.14107,
    "h": 270.8
  },
  "luminance": 0.03454
}

Semantic roles & 50–950 ramp

primary

#1F2A7E

secondary

#B1A548

accent

#D144E4

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1F2A7E

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

Preview Lab → · Contrast checker → · Palette generator →