#1F198F#1F198F

#1F198F is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.8% C 0.181 H 272.4°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#1F198F
RGB	rgb(31, 25, 143)
HSL	hsl(243, 70%, 33%)
HSV	hsv(243, 83%, 56%)
CMYK	cmyk(78.3%, 82.5%, 0%, 43.9%)
CIE-LAB	lab(19.92, 42.80, -62.54)
CIE-LCH	lch(19.92, 75.78, 304.39°)
OKLab	oklab(32.84% 0.0076 -0.181)
OKLCH	oklch(32.84% 0.181 272.4)
XYZ	xyz(5.8690, 2.9691, 26.2451)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F198F #898F19

analogous

#194E8F #1F198F #5A198F

triadic

#1F198F #8F1F19 #198F1F

tetradic

#1F198F #8F194E #898F19 #198F5A

square

#1F198F #8F194E #898F19 #198F5A

split-complementary

#1F198F #8F5A19 #4E8F19

monochromatic

#080727 #14105B #1F198F #2A22C3 #4C44DE

Accessibility & contrast

On white

13.17

#1F198F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1F198F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F198F

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F198F	#FFFFFF	#000000	##FFFFFF
##1F198F	1.00	13.17	1.59	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003692

Deuteranopia (green-blind)

#002A8D

Tritanopia (blue-blind)

#003E55

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f198f;
/* rgb */ color: rgb(31, 25, 143);
/* oklch */ color: oklch(32.8% 0.181 272.4);

Tailwind

colors: {
  custom: {
    50: '#7059b1',
    500: '#1f198f',
    950: '#000000',
  },
}

SCSS

$custom: #1f198f;
$custom-light: #7059b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f198f",
  "rgb": {
    "r": 31,
    "g": 25,
    "b": 143
  },
  "hsl": {
    "h": 243.051,
    "s": 70.238,
    "l": 32.941
  },
  "oklch": {
    "l": 0.32842,
    "c": 0.18112,
    "h": 272.4
  },
  "luminance": 0.0297
}

Semantic roles & 50–950 ramp

primary

#1F198F

secondary

#B9BF44

accent

#ED3BE4

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1F198F

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

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