#1F166F#1F166F

#1F166F is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.7% C 0.144 H 276.8°. Best body text is #FFFFFF at 14.97:1 contrast (WCAG AA passes).

Color values

HEX	#1F166F
RGB	rgb(31, 22, 111)
HSL	hsl(246, 67%, 26%)
HSV	hsv(246, 80%, 44%)
CMYK	cmyk(72.1%, 80.2%, 0%, 56.5%)
CIE-LAB	lab(15.55, 33.76, -49.41)
CIE-LCH	lch(15.55, 59.85, 304.34°)
OKLab	oklab(28.68% 0.017 -0.1428)
OKLCH	oklch(28.68% 0.144 276.8)
XYZ	xyz(3.7203, 2.0125, 15.2282)
Luminance	0.0201 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F166F #666F16

analogous

#16396F #1F166F #4B166F

triadic

#1F166F #6F1F16 #166F1F

tetradic

#1F166F #6F1639 #666F16 #166F4B

square

#1F166F #6F1639 #666F16 #166F4B

split-complementary

#1F166F #6F4B16 #396F16

monochromatic

#07051A #110C3C #1F166F #2D20A2 #3C2BD5

Accessibility & contrast

On white

14.97

#1F166F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#1F166F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F166F

14.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F166F	#FFFFFF	#000000	##FFFFFF
##1F166F	1.00	14.97	1.40	14.97
#FFFFFF	14.97	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	14.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A72

Deuteranopia (green-blind)

#00236D

Tritanopia (blue-blind)

#003042

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f166f;
/* rgb */ color: rgb(31, 22, 111);
/* oklch */ color: oklch(28.7% 0.144 276.8);

Tailwind

colors: {
  custom: {
    50: '#685599',
    500: '#1f166f',
    950: '#000000',
  },
}

SCSS

$custom: #1f166f;
$custom-light: #685599;
$custom-dark: #000000;

JSON

{
  "hex": "#1f166f",
  "rgb": {
    "r": 31,
    "g": 22,
    "b": 111
  },
  "hsl": {
    "h": 246.067,
    "s": 66.917,
    "l": 26.078
  },
  "oklch": {
    "l": 0.28677,
    "c": 0.14382,
    "h": 276.8
  },
  "luminance": 0.02013
}

Semantic roles & 50–950 ramp

primary

#1F166F

secondary

#9AA53C

accent

#EA3ED8

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F166F

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

Preview Lab → · Contrast checker → · Palette generator →