#1F186C#1F186C

#1F186C is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.6% C 0.138 H 276.9°. Best body text is #FFFFFF at 14.94:1 contrast (WCAG AA passes).

Color values

HEX	#1F186C
RGB	rgb(31, 24, 108)
HSL	hsl(245, 64%, 26%)
HSV	hsv(245, 78%, 42%)
CMYK	cmyk(71.3%, 77.8%, 0%, 57.6%)
CIE-LAB	lab(15.63, 31.55, -47.33)
CIE-LCH	lch(15.63, 56.88, 303.69°)
OKLab	oklab(28.63% 0.0166 -0.1368)
OKLCH	oklch(28.63% 0.138 276.9)
XYZ	xyz(3.5976, 2.0270, 14.3861)
Luminance	0.0203 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F186C #656C18

analogous

#183B6C #1F186C #49186C

triadic

#1F186C #6C1F18 #186C1F

tetradic

#1F186C #6C183B #656C18 #186C49

square

#1F186C #6C183B #656C18 #186C49

split-complementary

#1F186C #6C4918 #3B6C18

monochromatic

#070619 #110D3A #1F186C #2D239E #3C2ED0

Accessibility & contrast

On white

14.94

#1F186C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1F186C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F186C

14.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F186C	#FFFFFF	#000000	##FFFFFF
##1F186C	1.00	14.94	1.41	14.94
#FFFFFF	14.94	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6E

Deuteranopia (green-blind)

#00236A

Tritanopia (blue-blind)

#003040

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f186c;
/* rgb */ color: rgb(31, 24, 108);
/* oklch */ color: oklch(28.6% 0.138 276.9);

Tailwind

colors: {
  custom: {
    50: '#675697',
    500: '#1f186c',
    950: '#000000',
  },
}

SCSS

$custom: #1f186c;
$custom-light: #675697;
$custom-dark: #000000;

JSON

{
  "hex": "#1f186c",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 108
  },
  "hsl": {
    "h": 245,
    "s": 63.636,
    "l": 25.882
  },
  "oklch": {
    "l": 0.2863,
    "c": 0.13776,
    "h": 276.9
  },
  "luminance": 0.02027
}

Semantic roles & 50–950 ramp

primary

#1F186C

secondary

#99A23E

accent

#E741D9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F186C

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

Preview Lab → · Contrast checker → · Palette generator →