#1F138A#1F138A

#1F138A is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.6% C 0.180 H 273.4°. Best body text is #FFFFFF at 13.83:1 contrast (WCAG AA passes).

Color values

HEX	#1F138A
RGB	rgb(31, 19, 138)
HSL	hsl(246, 76%, 31%)
HSV	hsv(246, 86%, 54%)
CMYK	cmyk(77.5%, 86.2%, 0%, 45.9%)
CIE-LAB	lab(18.33, 44.06, -62.06)
CIE-LCH	lch(18.33, 76.11, 305.38°)
OKLab	oklab(31.56% 0.0107 -0.1794)
OKLCH	oklch(31.56% 0.18 273.4)
XYZ	xyz(5.3839, 2.5915, 24.2563)
Luminance	0.0259 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F138A #7E8A13

analogous

#13438A #1F138A #5A138A

triadic

#1F138A #8A1F13 #138A1F

tetradic

#1F138A #8A1343 #7E8A13 #138A5A

square

#1F138A #8A1343 #7E8A13 #138A5A

split-complementary

#1F138A #8A5A13 #438A13

monochromatic

#07041E #130C54 #1F138A #2B1AC0 #4634E3

Accessibility & contrast

On white

13.83

#1F138A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1F138A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F138A

13.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F138A	#FFFFFF	#000000	##FFFFFF
##1F138A	1.00	13.83	1.52	13.83
#FFFFFF	13.83	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00328D

Deuteranopia (green-blind)

#002788

Tritanopia (blue-blind)

#003A51

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f138a;
/* rgb */ color: rgb(31, 19, 138);
/* oklch */ color: oklch(31.6% 0.180 273.4);

Tailwind

colors: {
  custom: {
    50: '#6f56ae',
    500: '#1f138a',
    950: '#000000',
  },
}

SCSS

$custom: #1f138a;
$custom-light: #6f56ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f138a",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 138
  },
  "hsl": {
    "h": 246.05,
    "s": 75.796,
    "l": 30.784
  },
  "oklch": {
    "l": 0.31562,
    "c": 0.17977,
    "h": 273.4
  },
  "luminance": 0.02592
}

Semantic roles & 50–950 ramp

primary

#1F138A

secondary

#B1BE3A

accent

#F235DF

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #1F138A

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

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