#1F1281#1F1281

#1F1281 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.3% C 0.170 H 274.6°. Best body text is #FFFFFF at 14.37:1 contrast (WCAG AA passes).

Color values

HEX	#1F1281
RGB	rgb(31, 18, 129)
HSL	hsl(247, 76%, 29%)
HSV	hsv(247, 86%, 51%)
CMYK	cmyk(76%, 86%, 0%, 49.4%)
CIE-LAB	lab(17.03, 41.71, -58.53)
CIE-LCH	lch(17.03, 71.87, 305.47°)
OKLab	oklab(30.34% 0.0136 -0.1692)
OKLCH	oklch(30.34% 0.17 274.6)
XYZ	xyz(4.7425, 2.3084, 20.9603)
Luminance	0.0231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1281 #748112

analogous

#123D81 #1F1281 #571281

triadic

#1F1281 #811F12 #12811F

tetradic

#1F1281 #81123D #748112 #128157

square

#1F1281 #81123D #748112 #128157

split-complementary

#1F1281 #815712 #3D8112

monochromatic

#06041B #120B4B #1F1281 #2C19B7 #412CE2

Accessibility & contrast

On white

14.37

#1F1281 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#1F1281 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1281

14.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1281	#FFFFFF	#000000	##FFFFFF
##1F1281	1.00	14.37	1.46	14.37
#FFFFFF	14.37	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F84

Deuteranopia (green-blind)

#00257F

Tritanopia (blue-blind)

#00364B

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1f1281;
/* rgb */ color: rgb(31, 18, 129);
/* oklch */ color: oklch(30.3% 0.170 274.6);

Tailwind

colors: {
  custom: {
    50: '#6d54a7',
    500: '#1f1281',
    950: '#000000',
  },
}

SCSS

$custom: #1f1281;
$custom-light: #6d54a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1281",
  "rgb": {
    "r": 31,
    "g": 18,
    "b": 129
  },
  "hsl": {
    "h": 247.027,
    "s": 75.51,
    "l": 28.824
  },
  "oklch": {
    "l": 0.3034,
    "c": 0.16978,
    "h": 274.6
  },
  "luminance": 0.02309
}

Semantic roles & 50–950 ramp

primary

#1F1281

secondary

#A8B738

accent

#F236DC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1F1281

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

Preview Lab → · Contrast checker → · Palette generator →