#1F20A1#1F20A1

#1F20A1 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.8% C 0.197 H 270.4°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#1F20A1
RGB	rgb(31, 32, 161)
HSL	hsl(240, 68%, 38%)
HSV	hsv(240, 81%, 63%)
CMYK	cmyk(80.7%, 80.1%, 0%, 36.9%)
CIE-LAB	lab(23.33, 45.06, -67.97)
CIE-LCH	lch(23.33, 81.55, 303.54°)
OKLab	oklab(35.85% 0.0015 -0.1968)
OKLCH	oklch(35.85% 0.197 270.4)
XYZ	xyz(7.5124, 3.8967, 34.0675)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F20A1 #A1A01F

analogous

#1F61A1 #1F20A1 #5F1FA1

triadic

#1F20A1 #A11F20 #20A11F

tetradic

#1F20A1 #A11F61 #A1A01F #1FA15F

square

#1F20A1 #A11F61 #A1A01F #1FA15F

split-complementary

#1F20A1 #A15F1F #61A11F

monochromatic

#0B0C3A #15166E #1F20A1 #292AD4 #5B5CDF

Accessibility & contrast

On white

11.80

#1F20A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1F20A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F20A1

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F20A1	#FFFFFF	#000000	##FFFFFF
##1F20A1	1.00	11.80	1.78	11.80
#FFFFFF	11.80	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA5

Deuteranopia (green-blind)

#00319F

Tritanopia (blue-blind)

#004861

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f20a1;
/* rgb */ color: rgb(31, 32, 161);
/* oklch */ color: oklch(35.8% 0.197 270.4);

Tailwind

colors: {
  custom: {
    50: '#745ebe',
    500: '#1f20a1',
    950: '#000000',
  },
}

SCSS

$custom: #1f20a1;
$custom-light: #745ebe;
$custom-dark: #000000;

JSON

{
  "hex": "#1f20a1",
  "rgb": {
    "r": 31,
    "g": 32,
    "b": 161
  },
  "hsl": {
    "h": 239.538,
    "s": 67.708,
    "l": 37.647
  },
  "oklch": {
    "l": 0.35846,
    "c": 0.19683,
    "h": 270.4
  },
  "luminance": 0.03898
}

Semantic roles & 50–950 ramp

primary

#1F20A1

secondary

#C4C358

accent

#E93DEB

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #1F20A1

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

Preview Lab → · Contrast checker → · Palette generator →