#1F197A#1F197A

#1F197A is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.4% C 0.155 H 274.7°. Best body text is #FFFFFF at 14.20:1 contrast (WCAG AA passes).

Color values

HEX	#1F197A
RGB	rgb(31, 25, 122)
HSL	hsl(244, 66%, 29%)
HSV	hsv(244, 80%, 48%)
CMYK	cmyk(74.6%, 79.5%, 0%, 52.2%)
CIE-LAB	lab(17.42, 35.81, -53.43)
CIE-LCH	lch(17.42, 64.32, 303.83°)
OKLab	oklab(30.37% 0.0127 -0.1545)
OKLCH	oklch(30.37% 0.155 274.7)
XYZ	xyz(4.4244, 2.3913, 18.6370)
Luminance	0.0239 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F197A #747A19

analogous

#19447A #1F197A #50197A

triadic

#1F197A #7A1F19 #197A1F

tetradic

#1F197A #7A1944 #747A19 #197A50

square

#1F197A #7A1944 #747A19 #197A50

split-complementary

#1F197A #7A5019 #447A19

monochromatic

#060519 #120F47 #1F197A #2C23AD #4137D6

Accessibility & contrast

On white

14.20

#1F197A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1F197A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F197A

14.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F197A	#FFFFFF	#000000	##FFFFFF
##1F197A	1.00	14.20	1.48	14.20
#FFFFFF	14.20	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7D

Deuteranopia (green-blind)

#002678

Tritanopia (blue-blind)

#003649

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1f197a;
/* rgb */ color: rgb(31, 25, 122);
/* oklch */ color: oklch(30.4% 0.155 274.7);

Tailwind

colors: {
  custom: {
    50: '#6b58a2',
    500: '#1f197a',
    950: '#000000',
  },
}

SCSS

$custom: #1f197a;
$custom-light: #6b58a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f197a",
  "rgb": {
    "r": 31,
    "g": 25,
    "b": 122
  },
  "hsl": {
    "h": 243.711,
    "s": 65.986,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30365,
    "c": 0.15503,
    "h": 274.7
  },
  "luminance": 0.02392
}

Semantic roles & 50–950 ramp

primary

#1F197A

secondary

#A8AF40

accent

#E93FDE

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1F197A

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

Preview Lab → · Contrast checker → · Palette generator →