#1F1578#1F1578

#1F1578 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.6% C 0.156 H 275.5°. Best body text is #FFFFFF at 14.62:1 contrast (WCAG AA passes).

Color values

HEX	#1F1578
RGB	rgb(31, 21, 120)
HSL	hsl(246, 70%, 28%)
HSV	hsv(246, 83%, 47%)
CMYK	cmyk(74.2%, 82.5%, 0%, 52.9%)
CIE-LAB	lab(16.42, 37.34, -53.80)
CIE-LCH	lch(16.42, 65.48, 304.76°)
OKLab	oklab(29.6% 0.0151 -0.1555)
OKLCH	oklch(29.6% 0.156 275.5)
XYZ	xyz(4.2223, 2.1833, 17.9646)
Luminance	0.0218 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1578 #6E7815

analogous

#153C78 #1F1578 #511578

triadic

#1F1578 #781F15 #15781F

tetradic

#1F1578 #78153C #6E7815 #157851

square

#1F1578 #78153C #6E7815 #157851

split-complementary

#1F1578 #785115 #3C7815

monochromatic

#07051A #120C44 #1F1578 #2C1EAC #3F2DDA

Accessibility & contrast

On white

14.62

#1F1578 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1F1578 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1578

14.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1578	#FFFFFF	#000000	##FFFFFF
##1F1578	1.00	14.62	1.44	14.62
#FFFFFF	14.62	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7B

Deuteranopia (green-blind)

#002476

Tritanopia (blue-blind)

#003347

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f1578;
/* rgb */ color: rgb(31, 21, 120);
/* oklch */ color: oklch(29.6% 0.156 275.5);

Tailwind

colors: {
  custom: {
    50: '#6b55a0',
    500: '#1f1578',
    950: '#000000',
  },
}

SCSS

$custom: #1f1578;
$custom-light: #6b55a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1578",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 120
  },
  "hsl": {
    "h": 246.061,
    "s": 70.213,
    "l": 27.647
  },
  "oklch": {
    "l": 0.29597,
    "c": 0.15626,
    "h": 275.5
  },
  "luminance": 0.02184
}

Semantic roles & 50–950 ramp

primary

#1F1578

secondary

#A2AE3B

accent

#ED3BDB

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1F1578

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

Preview Lab → · Contrast checker → · Palette generator →