#1F348D#1F348D

#1F348D is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.149 H 267.9°. Best body text is #FFFFFF at 10.86:1 contrast (WCAG AA passes).

Color values

HEX	#1F348D
RGB	rgb(31, 52, 141)
HSL	hsl(229, 64%, 34%)
HSV	hsv(229, 78%, 55%)
CMYK	cmyk(78%, 63.1%, 0%, 44.7%)
CIE-LAB	lab(25.77, 25.45, -51.66)
CIE-LCH	lch(25.77, 57.59, 296.23°)
OKLab	oklab(36.99% -0.0055 -0.1493)
OKLCH	oklch(36.99% 0.149 267.9)
XYZ	xyz(6.5991, 4.6696, 25.7477)
Luminance	0.0467 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F348D #8D781F

analogous

#1F6B8D #1F348D #411F8D

triadic

#1F348D #8D1F34 #348D1F

tetradic

#1F348D #8D1F6B #8D781F #1F8D41

square

#1F348D #8D1F6B #8D781F #1F8D41

split-complementary

#1F348D #8D411F #6B8D1F

monochromatic

#090F29 #14215B #1F348D #2A47BF #4E69D8

Accessibility & contrast

On white

10.86

#1F348D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1F348D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F348D

10.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F348D	#FFFFFF	#000000	##FFFFFF
##1F348D	1.00	10.86	1.93	10.86
#FFFFFF	10.86	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004290

Deuteranopia (green-blind)

#00388B

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1f348d;
/* rgb */ color: rgb(31, 52, 141);
/* oklch */ color: oklch(37.0% 0.149 267.9);

Tailwind

colors: {
  custom: {
    50: '#6d6baf',
    500: '#1f348d',
    950: '#000000',
  },
}

SCSS

$custom: #1f348d;
$custom-light: #6d6baf;
$custom-dark: #000000;

JSON

{
  "hex": "#1f348d",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 141
  },
  "hsl": {
    "h": 228.545,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.36991,
    "c": 0.14941,
    "h": 267.9
  },
  "luminance": 0.0467
}

Semantic roles & 50–950 ramp

primary

#1F348D

secondary

#BBA64D

accent

#C741E7

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1F348D

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

Preview Lab → · Contrast checker → · Palette generator →