#1F186F#1F186F

#1F186F is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.0% C 0.142 H 276.4°. Best body text is #FFFFFF at 14.81:1 contrast (WCAG AA passes).

Color values

HEX	#1F186F
RGB	rgb(31, 24, 111)
HSL	hsl(245, 64%, 26%)
HSV	hsv(245, 78%, 44%)
CMYK	cmyk(72.1%, 78.4%, 0%, 56.5%)
CIE-LAB	lab(15.96, 32.60, -48.74)
CIE-LCH	lch(15.96, 58.63, 303.78°)
OKLab	oklab(28.97% 0.0159 -0.1409)
OKLCH	oklch(28.97% 0.142 276.4)
XYZ	xyz(3.7600, 2.0919, 15.2415)
Luminance	0.0209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F186F #686F18

analogous

#183D6F #1F186F #4B186F

triadic

#1F186F #6F1F18 #186F1F

tetradic

#1F186F #6F183D #686F18 #186F4B

square

#1F186F #6F183D #686F18 #186F4B

split-complementary

#1F186F #6F4B18 #3D6F18

monochromatic

#070519 #110D3D #1F186F #2D23A1 #3C2FD2

Accessibility & contrast

On white

14.81

#1F186F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#1F186F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F186F

14.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F186F	#FFFFFF	#000000	##FFFFFF
##1F186F	1.00	14.81	1.42	14.81
#FFFFFF	14.81	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B72

Deuteranopia (green-blind)

#00246D

Tritanopia (blue-blind)

#003142

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1f186f;
/* rgb */ color: rgb(31, 24, 111);
/* oklch */ color: oklch(29.0% 0.142 276.4);

Tailwind

colors: {
  custom: {
    50: '#685699',
    500: '#1f186f',
    950: '#000000',
  },
}

SCSS

$custom: #1f186f;
$custom-light: #685699;
$custom-dark: #000000;

JSON

{
  "hex": "#1f186f",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 111
  },
  "hsl": {
    "h": 244.828,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.28966,
    "c": 0.14175,
    "h": 276.4
  },
  "luminance": 0.02092
}

Semantic roles & 50–950 ramp

primary

#1F186F

secondary

#9CA53E

accent

#E740DA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F186F

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

Preview Lab → · Contrast checker → · Palette generator →