#1F1FAA#1F1FAA

#1F1FAA is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 36.8% C 0.208 H 270.0°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#1F1FAA
RGB	rgb(31, 31, 170)
HSL	hsl(240, 69%, 39%)
HSV	hsv(240, 82%, 67%)
CMYK	cmyk(81.8%, 81.8%, 0%, 33.3%)
CIE-LAB	lab(24.23, 48.48, -71.92)
CIE-LCH	lch(24.23, 86.74, 303.98°)
OKLab	oklab(36.79% -0.0001 -0.2082)
OKLCH	oklch(36.79% 0.208 270)
XYZ	xyz(8.3083, 4.1726, 38.3899)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1FAA #AAAA1F

analogous

#1F65AA #1F1FAA #651FAA

triadic

#1F1FAA #AA1F1F #1FAA1F

tetradic

#1F1FAA #AA1F65 #AAAA1F #1FAA65

square

#1F1FAA #AA1F65 #AAAA1F #1FAA65

split-complementary

#1F1FAA #AA651F #65AA1F

monochromatic

#0C0C42 #161676 #1F1FAA #2D2DD9 #6161E2

Accessibility & contrast

On white

11.45

#1F1FAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1F1FAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1FAA

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1FAA	#FFFFFF	#000000	##FFFFFF
##1F1FAA	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AE

Deuteranopia (green-blind)

#0032A8

Tritanopia (blue-blind)

#004B66

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f1faa;
/* rgb */ color: rgb(31, 31, 170);
/* oklch */ color: oklch(36.8% 0.208 270.0);

Tailwind

colors: {
  custom: {
    50: '#775ec5',
    500: '#1f1faa',
    950: '#000000',
  },
}

SCSS

$custom: #1f1faa;
$custom-light: #775ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1faa",
  "rgb": {
    "r": 31,
    "g": 31,
    "b": 170
  },
  "hsl": {
    "h": 240,
    "s": 69.154,
    "l": 39.412
  },
  "oklch": {
    "l": 0.36791,
    "c": 0.20824,
    "h": 270
  },
  "luminance": 0.04174
}

Semantic roles & 50–950 ramp

primary

#1F1FAA

secondary

#C7C75E

accent

#EC3CEC

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #1F1FAA

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

Preview Lab → · Contrast checker → · Palette generator →