#1F348F#1F348F

#1F348F is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.2% C 0.152 H 267.9°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#1F348F
RGB	rgb(31, 52, 143)
HSL	hsl(229, 64%, 34%)
HSV	hsv(229, 78%, 56%)
CMYK	cmyk(78.3%, 63.6%, 0%, 43.9%)
CIE-LAB	lab(25.95, 26.23, -52.60)
CIE-LCH	lch(25.95, 58.78, 296.50°)
OKLab	oklab(37.18% -0.0055 -0.1521)
OKLCH	oklch(37.18% 0.152 267.9)
XYZ	xyz(6.7493, 4.7297, 26.5385)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F348F #8F7A1F

analogous

#1F6C8F #1F348F #421F8F

triadic

#1F348F #8F1F34 #348F1F

tetradic

#1F348F #8F1F6C #8F7A1F #1F8F42

square

#1F348F #8F1F6C #8F7A1F #1F8F42

split-complementary

#1F348F #8F421F #6C8F1F

monochromatic

#090F2A #14225D #1F348F #2A46C1 #4F69D9

Accessibility & contrast

On white

10.79

#1F348F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1F348F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F348F

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F348F	#FFFFFF	#000000	##FFFFFF
##1F348F	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004392

Deuteranopia (green-blind)

#00388D

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1f348f;
/* rgb */ color: rgb(31, 52, 143);
/* oklch */ color: oklch(37.2% 0.152 267.9);

Tailwind

colors: {
  custom: {
    50: '#6e6bb1',
    500: '#1f348f',
    950: '#000000',
  },
}

SCSS

$custom: #1f348f;
$custom-light: #6e6bb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f348f",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 143
  },
  "hsl": {
    "h": 228.75,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.37179,
    "c": 0.15219,
    "h": 267.9
  },
  "luminance": 0.0473
}

Semantic roles & 50–950 ramp

primary

#1F348F

secondary

#BCA74E

accent

#C840E7

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1F348F

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

Preview Lab → · Contrast checker → · Palette generator →