#1F137C#1F137C

#1F137C is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.8% C 0.163 H 275.2°. Best body text is #FFFFFF at 14.56:1 contrast (WCAG AA passes).

Color values

HEX	#1F137C
RGB	rgb(31, 19, 124)
HSL	hsl(247, 73%, 28%)
HSV	hsv(247, 85%, 49%)
CMYK	cmyk(75%, 84.7%, 0%, 51.4%)
CIE-LAB	lab(16.56, 39.65, -56.12)
CIE-LCH	lch(16.56, 68.72, 305.24°)
OKLab	oklab(29.84% 0.0148 -0.1623)
OKLCH	oklch(29.84% 0.163 275.2)
XYZ	xyz(4.4348, 2.2119, 19.2581)
Luminance	0.0221 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F137C #707C13

analogous

#133B7C #1F137C #53137C

triadic

#1F137C #7C1F13 #137C1F

tetradic

#1F137C #7C133B #707C13 #137C53

square

#1F137C #7C133B #707C13 #137C53

split-complementary

#1F137C #7C5313 #3B7C13

monochromatic

#07041B #120B47 #1F137C #2C1BB1 #3F2BDF

Accessibility & contrast

On white

14.56

#1F137C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1F137C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F137C

14.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F137C	#FFFFFF	#000000	##FFFFFF
##1F137C	1.00	14.56	1.44	14.56
#FFFFFF	14.56	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7F

Deuteranopia (green-blind)

#00247A

Tritanopia (blue-blind)

#003449

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f137c;
/* rgb */ color: rgb(31, 19, 124);
/* oklch */ color: oklch(29.8% 0.163 275.2);

Tailwind

colors: {
  custom: {
    50: '#6c54a3',
    500: '#1f137c',
    950: '#000000',
  },
}

SCSS

$custom: #1f137c;
$custom-light: #6c54a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f137c",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 124
  },
  "hsl": {
    "h": 246.857,
    "s": 73.427,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29837,
    "c": 0.16293,
    "h": 275.2
  },
  "luminance": 0.02212
}

Semantic roles & 50–950 ramp

primary

#1F137C

secondary

#A4B239

accent

#F038DB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F137C

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

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