#1F166A#1F166A

#1F166A is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.1% C 0.137 H 277.7°. Best body text is #FFFFFF at 15.20:1 contrast (WCAG AA passes).

Color values

HEX	#1F166A
RGB	rgb(31, 22, 106)
HSL	hsl(246, 66%, 25%)
HSV	hsv(246, 79%, 42%)
CMYK	cmyk(70.8%, 79.2%, 0%, 58.4%)
CIE-LAB	lab(14.98, 32.05, -47.09)
CIE-LCH	lch(14.98, 56.96, 304.24°)
OKLab	oklab(28.11% 0.0183 -0.136)
OKLCH	oklch(28.11% 0.137 277.7)
XYZ	xyz(3.4527, 1.9054, 13.8187)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F166A #616A16

analogous

#16376A #1F166A #49166A

triadic

#1F166A #6A1F16 #166A1F

tetradic

#1F166A #6A1637 #616A16 #166A49

square

#1F166A #6A1637 #616A16 #166A49

split-complementary

#1F166A #6A4916 #376A16

monochromatic

#070519 #100B37 #1F166A #2E219D #3D2BCF

Accessibility & contrast

On white

15.20

#1F166A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#1F166A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F166A

15.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F166A	#FFFFFF	#000000	##FFFFFF
##1F166A	1.00	15.20	1.38	15.20
#FFFFFF	15.20	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00296C

Deuteranopia (green-blind)

#002268

Tritanopia (blue-blind)

#002E3F

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1f166a;
/* rgb */ color: rgb(31, 22, 106);
/* oklch */ color: oklch(28.1% 0.137 277.7);

Tailwind

colors: {
  custom: {
    50: '#675596',
    500: '#1f166a',
    950: '#000000',
  },
}

SCSS

$custom: #1f166a;
$custom-light: #675596;
$custom-dark: #000000;

JSON

{
  "hex": "#1f166a",
  "rgb": {
    "r": 31,
    "g": 22,
    "b": 106
  },
  "hsl": {
    "h": 246.429,
    "s": 65.625,
    "l": 25.098
  },
  "oklch": {
    "l": 0.28107,
    "c": 0.13725,
    "h": 277.7
  },
  "luminance": 0.01906
}

Semantic roles & 50–950 ramp

primary

#1F166A

secondary

#96A03B

accent

#E93FD6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #1F166A

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

Preview Lab → · Contrast checker → · Palette generator →