#1F348E#1F348E

#1F348E is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.1% C 0.151 H 267.9°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#1F348E
RGB	rgb(31, 52, 142)
HSL	hsl(229, 64%, 34%)
HSV	hsv(229, 78%, 56%)
CMYK	cmyk(78.2%, 63.4%, 0%, 44.3%)
CIE-LAB	lab(25.86, 25.84, -52.13)
CIE-LCH	lch(25.86, 58.18, 296.37°)
OKLab	oklab(37.09% -0.0055 -0.1507)
OKLCH	oklch(37.09% 0.151 267.9)
XYZ	xyz(6.6739, 4.6995, 26.1413)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F348E #8E791F

analogous

#1F6C8E #1F348E #421F8E

triadic

#1F348E #8E1F34 #348E1F

tetradic

#1F348E #8E1F6C #8E791F #1F8E42

square

#1F348E #8E1F6C #8E791F #1F8E42

split-complementary

#1F348E #8E421F #6C8E1F

monochromatic

#090F2A #14225C #1F348E #2A46C0 #4F69D9

Accessibility & contrast

On white

10.82

#1F348E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1F348E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F348E

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F348E	#FFFFFF	#000000	##FFFFFF
##1F348E	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004391

Deuteranopia (green-blind)

#00388C

Tritanopia (blue-blind)

#004B5C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1f348e;
/* rgb */ color: rgb(31, 52, 142);
/* oklch */ color: oklch(37.1% 0.151 267.9);

Tailwind

colors: {
  custom: {
    50: '#6d6bb0',
    500: '#1f348e',
    950: '#000000',
  },
}

SCSS

$custom: #1f348e;
$custom-light: #6d6bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f348e",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 142
  },
  "hsl": {
    "h": 228.649,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.37085,
    "c": 0.1508,
    "h": 267.9
  },
  "luminance": 0.047
}

Semantic roles & 50–950 ramp

primary

#1F348E

secondary

#BBA74D

accent

#C841E7

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1F348E

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

Preview Lab → · Contrast checker → · Palette generator →