#1F166E#1F166E

#1F166E is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.6% C 0.143 H 277.0°. Best body text is #FFFFFF at 15.02:1 contrast (WCAG AA passes).

Color values

HEX	#1F166E
RGB	rgb(31, 22, 110)
HSL	hsl(246, 67%, 26%)
HSV	hsv(246, 80%, 43%)
CMYK	cmyk(71.8%, 80%, 0%, 56.9%)
CIE-LAB	lab(15.44, 33.42, -48.95)
CIE-LCH	lch(15.44, 59.27, 304.32°)
OKLab	oklab(28.56% 0.0173 -0.1415)
OKLCH	oklch(28.56% 0.143 277)
XYZ	xyz(3.6655, 1.9906, 14.9399)
Luminance	0.0199 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F166E #656E16

analogous

#16396E #1F166E #4B166E

triadic

#1F166E #6E1F16 #166E1F

tetradic

#1F166E #6E1639 #656E16 #166E4B

square

#1F166E #6E1639 #656E16 #166E4B

split-complementary

#1F166E #6E4B16 #396E16

monochromatic

#07051A #110C3B #1F166E #2D20A1 #3C2AD4

Accessibility & contrast

On white

15.02

#1F166E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#1F166E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F166E

15.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F166E	#FFFFFF	#000000	##FFFFFF
##1F166E	1.00	15.02	1.40	15.02
#FFFFFF	15.02	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A71

Deuteranopia (green-blind)

#00236C

Tritanopia (blue-blind)

#003041

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f166e;
/* rgb */ color: rgb(31, 22, 110);
/* oklch */ color: oklch(28.6% 0.143 277.0);

Tailwind

colors: {
  custom: {
    50: '#685599',
    500: '#1f166e',
    950: '#000000',
  },
}

SCSS

$custom: #1f166e;
$custom-light: #685599;
$custom-dark: #000000;

JSON

{
  "hex": "#1f166e",
  "rgb": {
    "r": 31,
    "g": 22,
    "b": 110
  },
  "hsl": {
    "h": 246.136,
    "s": 66.667,
    "l": 25.882
  },
  "oklch": {
    "l": 0.28562,
    "c": 0.14251,
    "h": 277
  },
  "luminance": 0.01991
}

Semantic roles & 50–950 ramp

primary

#1F166E

secondary

#99A43C

accent

#EA3ED8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F166E

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

Preview Lab → · Contrast checker → · Palette generator →