#1F1569#1F1569

#1F1569 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.8% C 0.137 H 278.0°. Best body text is #FFFFFF at 15.33:1 contrast (WCAG AA passes).

Color values

HEX	#1F1569
RGB	rgb(31, 21, 105)
HSL	hsl(247, 67%, 25%)
HSV	hsv(247, 80%, 41%)
CMYK	cmyk(70.5%, 80%, 0%, 58.8%)
CIE-LAB	lab(14.66, 32.28, -46.96)
CIE-LCH	lch(14.66, 56.98, 304.51°)
OKLab	oklab(27.85% 0.0192 -0.1356)
OKLCH	oklch(27.85% 0.137 278)
XYZ	xyz(3.3822, 1.8473, 13.5402)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1569 #5F6915

analogous

#153569 #1F1569 #491569

triadic

#1F1569 #691F15 #15691F

tetradic

#1F1569 #691535 #5F6915 #156949

square

#1F1569 #691535 #5F6915 #156949

split-complementary

#1F1569 #694915 #356915

monochromatic

#08051A #100B36 #1F1569 #2E1F9C #3D29CF

Accessibility & contrast

On white

15.33

#1F1569 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1F1569 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1569

15.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1569	#FFFFFF	#000000	##FFFFFF
##1F1569	1.00	15.33	1.37	15.33
#FFFFFF	15.33	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00286B

Deuteranopia (green-blind)

#002167

Tritanopia (blue-blind)

#002D3E

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1f1569;
/* rgb */ color: rgb(31, 21, 105);
/* oklch */ color: oklch(27.8% 0.137 278.0);

Tailwind

colors: {
  custom: {
    50: '#675495',
    500: '#1f1569',
    950: '#000000',
  },
}

SCSS

$custom: #1f1569;
$custom-light: #675495;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1569",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 105
  },
  "hsl": {
    "h": 247.143,
    "s": 66.667,
    "l": 24.706
  },
  "oklch": {
    "l": 0.27849,
    "c": 0.13699,
    "h": 278
  },
  "luminance": 0.01848
}

Semantic roles & 50–950 ramp

primary

#1F1569

secondary

#94A03A

accent

#EA3ED5

background

#F6F4F9

surface

#EBE8F2

border

#C6C4CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #1F1569

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

Preview Lab → · Contrast checker → · Palette generator →