#1F1FA6#1F1FA6

#1F1FA6 is a dark, highly saturated blue. Relative luminance 0.040; OKLCH L 36.3% C 0.204 H 270.2°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX	#1F1FA6
RGB	rgb(31, 31, 166)
HSL	hsl(240, 69%, 39%)
HSV	hsv(240, 81%, 65%)
CMYK	cmyk(81.3%, 81.3%, 0%, 34.9%)
CIE-LAB	lab(23.75, 47.20, -70.31)
CIE-LCH	lch(23.75, 84.68, 303.88°)
OKLab	oklab(36.31% 0.0007 -0.2036)
OKLCH	oklch(36.31% 0.204 270.2)
XYZ	xyz(7.9357, 4.0235, 36.4274)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1FA6 #A6A61F

analogous

#1F62A6 #1F1FA6 #621FA6

triadic

#1F1FA6 #A61F1F #1FA61F

tetradic

#1F1FA6 #A61F62 #A6A61F #1FA662

square

#1F1FA6 #A61F62 #A6A61F #1FA662

split-complementary

#1F1FA6 #A6621F #62A61F

monochromatic

#0C0C3F #151572 #1F1FA6 #2B2BD7 #5E5EE1

Accessibility & contrast

On white

11.64

#1F1FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1F1FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1FA6

11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1FA6	#FFFFFF	#000000	##FFFFFF
##1F1FA6	1.00	11.64	1.80	11.64
#FFFFFF	11.64	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FAA

Deuteranopia (green-blind)

#0031A4

Tritanopia (blue-blind)

#004A63

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f1fa6;
/* rgb */ color: rgb(31, 31, 166);
/* oklch */ color: oklch(36.3% 0.204 270.2);

Tailwind

colors: {
  custom: {
    50: '#765ec2',
    500: '#1f1fa6',
    950: '#000000',
  },
}

SCSS

$custom: #1f1fa6;
$custom-light: #765ec2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1fa6",
  "rgb": {
    "r": 31,
    "g": 31,
    "b": 166
  },
  "hsl": {
    "h": 240,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.36314,
    "c": 0.20357,
    "h": 270.2
  },
  "luminance": 0.04024
}

Semantic roles & 50–950 ramp

primary

#1F1FA6

secondary

#C5C55B

accent

#EB3CEB

background

#F7F5FC

surface

#EEE9F8

border

#C9C5D1

text

#0A0513

muted

#7C7982

Preview Lab

Preview with #1F1FA6

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

Preview Lab → · Contrast checker → · Palette generator →