#1F347E#1F347E

#1F347E is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.6% C 0.128 H 267.4°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#1F347E
RGB	rgb(31, 52, 126)
HSL	hsl(227, 61%, 31%)
HSV	hsv(227, 75%, 49%)
CMYK	cmyk(75.4%, 58.7%, 0%, 50.6%)
CIE-LAB	lab(24.49, 19.54, -44.37)
CIE-LCH	lch(24.49, 48.48, 293.76°)
OKLab	oklab(35.64% -0.0058 -0.1279)
OKLCH	oklch(35.64% 0.128 267.4)
XYZ	xyz(5.5577, 4.2531, 20.2626)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F347E #7E691F

analogous

#1F637E #1F347E #391F7E

triadic

#1F347E #7E1F34 #347E1F

tetradic

#1F347E #7E1F63 #7E691F #1F7E39

square

#1F347E #7E1F63 #7E691F #1F7E39

split-complementary

#1F347E #7E391F #637E1F

monochromatic

#070B1C #13204D #1F347E #2B48AF #4665D1

Accessibility & contrast

On white

11.35

#1F347E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1F347E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F347E

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F347E	#FFFFFF	#000000	##FFFFFF
##1F347E	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F81

Deuteranopia (green-blind)

#00367D

Tritanopia (blue-blind)

#004653

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f347e;
/* rgb */ color: rgb(31, 52, 126);
/* oklch */ color: oklch(35.6% 0.128 267.4);

Tailwind

colors: {
  custom: {
    50: '#696ba4',
    500: '#1f347e',
    950: '#000000',
  },
}

SCSS

$custom: #1f347e;
$custom-light: #696ba4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f347e",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 126
  },
  "hsl": {
    "h": 226.737,
    "s": 60.51,
    "l": 30.784
  },
  "oklch": {
    "l": 0.35637,
    "c": 0.12806,
    "h": 267.4
  },
  "luminance": 0.04254
}

Semantic roles & 50–950 ramp

primary

#1F347E

secondary

#B19A48

accent

#C044E4

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1F347E

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

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