#1F166B#1F166B

#1F166B is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.2% C 0.139 H 277.5°. Best body text is #FFFFFF at 15.16:1 contrast (WCAG AA passes).

Color values

HEX	#1F166B
RGB	rgb(31, 22, 107)
HSL	hsl(246, 66%, 25%)
HSV	hsv(246, 79%, 42%)
CMYK	cmyk(71%, 79.4%, 0%, 58%)
CIE-LAB	lab(15.10, 32.39, -47.56)
CIE-LCH	lch(15.10, 57.54, 304.26°)
OKLab	oklab(28.22% 0.018 -0.1374)
OKLCH	oklch(28.22% 0.139 277.5)
XYZ	xyz(3.5050, 1.9264, 14.0942)
Luminance	0.0193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F166B #626B16

analogous

#16376B #1F166B #49166B

triadic

#1F166B #6B1F16 #166B1F

tetradic

#1F166B #6B1637 #626B16 #166B49

square

#1F166B #6B1637 #626B16 #166B49

split-complementary

#1F166B #6B4916 #376B16

monochromatic

#070519 #100C38 #1F166B #2E209E #3C2BD1

Accessibility & contrast

On white

15.16

#1F166B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1F166B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F166B

15.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F166B	#FFFFFF	#000000	##FFFFFF
##1F166B	1.00	15.16	1.39	15.16
#FFFFFF	15.16	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00296D

Deuteranopia (green-blind)

#002269

Tritanopia (blue-blind)

#002F3F

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1f166b;
/* rgb */ color: rgb(31, 22, 107);
/* oklch */ color: oklch(28.2% 0.139 277.5);

Tailwind

colors: {
  custom: {
    50: '#675596',
    500: '#1f166b',
    950: '#000000',
  },
}

SCSS

$custom: #1f166b;
$custom-light: #675596;
$custom-dark: #000000;

JSON

{
  "hex": "#1f166b",
  "rgb": {
    "r": 31,
    "g": 22,
    "b": 107
  },
  "hsl": {
    "h": 246.353,
    "s": 65.891,
    "l": 25.294
  },
  "oklch": {
    "l": 0.2822,
    "c": 0.13858,
    "h": 277.5
  },
  "luminance": 0.01927
}

Semantic roles & 50–950 ramp

primary

#1F166B

secondary

#97A13B

accent

#E93FD7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #1F166B

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

Preview Lab → · Contrast checker → · Palette generator →