#1F347A#1F347A

#1F347A is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.3% C 0.122 H 267.2°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#1F347A
RGB	rgb(31, 52, 122)
HSL	hsl(226, 59%, 30%)
HSV	hsv(226, 75%, 48%)
CMYK	cmyk(74.6%, 57.4%, 0%, 52.2%)
CIE-LAB	lab(24.17, 17.94, -42.37)
CIE-LCH	lch(24.17, 46.01, 292.95°)
OKLab	oklab(35.29% -0.006 -0.122)
OKLCH	oklch(35.29% 0.122 267.2)
XYZ	xyz(5.3047, 4.1519, 18.9304)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F347A #7A651F

analogous

#1F617A #1F347A #381F7A

triadic

#1F347A #7A1F34 #347A1F

tetradic

#1F347A #7A1F61 #7A651F #1F7A38

square

#1F347A #7A1F61 #7A651F #1F7A38

split-complementary

#1F347A #7A381F #617A1F

monochromatic

#060A18 #131F49 #1F347A #2B49AB #4464CF

Accessibility & contrast

On white

11.47

#1F347A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1F347A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F347A

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F347A	#FFFFFF	#000000	##FFFFFF
##1F347A	1.00	11.47	1.83	11.47
#FFFFFF	11.47	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7C

Deuteranopia (green-blind)

#003579

Tritanopia (blue-blind)

#004551

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f347a;
/* rgb */ color: rgb(31, 52, 122);
/* oklch */ color: oklch(35.3% 0.122 267.2);

Tailwind

colors: {
  custom: {
    50: '#686ba1',
    500: '#1f347a',
    950: '#000000',
  },
}

SCSS

$custom: #1f347a;
$custom-light: #686ba1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f347a",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 122
  },
  "hsl": {
    "h": 226.154,
    "s": 59.477,
    "l": 30
  },
  "oklch": {
    "l": 0.35292,
    "c": 0.12219,
    "h": 267.2
  },
  "luminance": 0.04152
}

Semantic roles & 50–950 ramp

primary

#1F347A

secondary

#AD9647

accent

#BE45E3

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1F347A

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

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