#1F166D#1F166D

#1F166D is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.4% C 0.141 H 277.1°. Best body text is #FFFFFF at 15.07:1 contrast (WCAG AA passes).

Color values

HEX	#1F166D
RGB	rgb(31, 22, 109)
HSL	hsl(246, 66%, 26%)
HSV	hsv(246, 80%, 43%)
CMYK	cmyk(71.6%, 79.8%, 0%, 57.3%)
CIE-LAB	lab(15.32, 33.08, -48.49)
CIE-LCH	lch(15.32, 58.70, 304.30°)
OKLab	oklab(28.45% 0.0175 -0.1401)
OKLCH	oklch(28.45% 0.141 277.1)
XYZ	xyz(3.6114, 1.9689, 14.6548)
Luminance	0.0197 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F166D #646D16

analogous

#16386D #1F166D #4A166D

triadic

#1F166D #6D1F16 #166D1F

tetradic

#1F166D #6D1638 #646D16 #166D4A

square

#1F166D #6D1638 #646D16 #166D4A

split-complementary

#1F166D #6D4A16 #386D16

monochromatic

#070519 #110C3A #1F166D #2D20A0 #3C2BD3

Accessibility & contrast

On white

15.07

#1F166D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1F166D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F166D

15.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F166D	#FFFFFF	#000000	##FFFFFF
##1F166D	1.00	15.07	1.39	15.07
#FFFFFF	15.07	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6F

Deuteranopia (green-blind)

#00236B

Tritanopia (blue-blind)

#002F41

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1f166d;
/* rgb */ color: rgb(31, 22, 109);
/* oklch */ color: oklch(28.4% 0.141 277.1);

Tailwind

colors: {
  custom: {
    50: '#685598',
    500: '#1f166d',
    950: '#000000',
  },
}

SCSS

$custom: #1f166d;
$custom-light: #685598;
$custom-dark: #000000;

JSON

{
  "hex": "#1f166d",
  "rgb": {
    "r": 31,
    "g": 22,
    "b": 109
  },
  "hsl": {
    "h": 246.207,
    "s": 66.412,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28448,
    "c": 0.1412,
    "h": 277.1
  },
  "luminance": 0.01969
}

Semantic roles & 50–950 ramp

primary

#1F166D

secondary

#98A33C

accent

#E93ED8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F166D

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

Preview Lab → · Contrast checker → · Palette generator →