#1F348C#1F348C

#1F348C is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.9% C 0.148 H 267.9°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#1F348C
RGB	rgb(31, 52, 140)
HSL	hsl(228, 64%, 34%)
HSV	hsv(228, 78%, 55%)
CMYK	cmyk(77.9%, 62.9%, 0%, 45.1%)
CIE-LAB	lab(25.68, 25.06, -51.18)
CIE-LCH	lch(25.68, 56.99, 296.09°)
OKLab	oklab(36.9% -0.0055 -0.1479)
OKLCH	oklch(36.9% 0.148 267.9)
XYZ	xyz(6.5250, 4.6400, 25.3576)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F348C #8C771F

analogous

#1F6A8C #1F348C #401F8C

triadic

#1F348C #8C1F34 #348C1F

tetradic

#1F348C #8C1F6A #8C771F #1F8C40

square

#1F348C #8C1F6A #8C771F #1F8C40

split-complementary

#1F348C #8C401F #6A8C1F

monochromatic

#090F28 #14215A #1F348C #2A47BE #4E68D8

Accessibility & contrast

On white

10.89

#1F348C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1F348C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F348C

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F348C	#FFFFFF	#000000	##FFFFFF
##1F348C	1.00	10.89	1.93	10.89
#FFFFFF	10.89	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428F

Deuteranopia (green-blind)

#00388A

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1f348c;
/* rgb */ color: rgb(31, 52, 140);
/* oklch */ color: oklch(36.9% 0.148 267.9);

Tailwind

colors: {
  custom: {
    50: '#6d6bae',
    500: '#1f348c',
    950: '#000000',
  },
}

SCSS

$custom: #1f348c;
$custom-light: #6d6bae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f348c",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 140
  },
  "hsl": {
    "h": 228.44,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.36898,
    "c": 0.14802,
    "h": 267.9
  },
  "luminance": 0.04641
}

Semantic roles & 50–950 ramp

primary

#1F348C

secondary

#BBA54C

accent

#C741E7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1F348C

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

Preview Lab → · Contrast checker → · Palette generator →