#1F349E#1F349E

#1F349E is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.6% C 0.172 H 268.0°. Best body text is #FFFFFF at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#1F349E
RGB	rgb(31, 52, 158)
HSL	hsl(230, 67%, 37%)
HSV	hsv(230, 80%, 62%)
CMYK	cmyk(80.4%, 67.1%, 0%, 38%)
CIE-LAB	lab(27.34, 31.97, -59.52)
CIE-LCH	lch(27.34, 67.57, 298.24°)
OKLab	oklab(38.63% -0.0061 -0.1723)
OKLCH	oklch(38.63% 0.172 268)
XYZ	xyz(7.9625, 5.2150, 32.9281)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F349E #9E891F

analogous

#1F749E #1F349E #4A1F9E

triadic

#1F349E #9E1F34 #349E1F

tetradic

#1F349E #9E1F74 #9E891F #1F9E4A

square

#1F349E #9E1F74 #9E891F #1F9E4A

split-complementary

#1F349E #9E4A1F #749E1F

monochromatic

#0B1238 #15236B #1F349E #2945D1 #596FDE

Accessibility & contrast

On white

10.28

#1F349E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1F349E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F349E

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F349E	#FFFFFF	#000000	##FFFFFF
##1F349E	1.00	10.28	2.04	10.28
#FFFFFF	10.28	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A1

Deuteranopia (green-blind)

#003B9C

Tritanopia (blue-blind)

#005164

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f349e;
/* rgb */ color: rgb(31, 52, 158);
/* oklch */ color: oklch(38.6% 0.172 268.0);

Tailwind

colors: {
  custom: {
    50: '#716bbc',
    500: '#1f349e',
    950: '#000000',
  },
}

SCSS

$custom: #1f349e;
$custom-light: #716bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f349e",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 158
  },
  "hsl": {
    "h": 230.079,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.38626,
    "c": 0.17245,
    "h": 268
  },
  "luminance": 0.05216
}

Semantic roles & 50–950 ramp

primary

#1F349E

secondary

#C2B056

accent

#CE3EEA

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1F349E

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

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