#1F186B#1F186B

#1F186B is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.5% C 0.136 H 277.1°. Best body text is #FFFFFF at 14.99:1 contrast (WCAG AA passes).

Color values

HEX	#1F186B
RGB	rgb(31, 24, 107)
HSL	hsl(245, 63%, 26%)
HSV	hsv(245, 78%, 42%)
CMYK	cmyk(71%, 77.6%, 0%, 58%)
CIE-LAB	lab(15.52, 31.20, -46.86)
CIE-LCH	lch(15.52, 56.30, 303.65°)
OKLab	oklab(28.52% 0.0168 -0.1354)
OKLCH	oklch(28.52% 0.136 277.1)
XYZ	xyz(3.5447, 2.0058, 14.1074)
Luminance	0.0201 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F186B #646B18

analogous

#183A6B #1F186B #48186B

triadic

#1F186B #6B1F18 #186B1F

tetradic

#1F186B #6B183A #646B18 #186B48

square

#1F186B #6B183A #646B18 #186B48

split-complementary

#1F186B #6B4818 #3A6B18

monochromatic

#070619 #110D39 #1F186B #2D239D #3C2ECF

Accessibility & contrast

On white

14.99

#1F186B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#1F186B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F186B

14.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F186B	#FFFFFF	#000000	##FFFFFF
##1F186B	1.00	14.99	1.40	14.99
#FFFFFF	14.99	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	14.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6D

Deuteranopia (green-blind)

#002369

Tritanopia (blue-blind)

#003040

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f186b;
/* rgb */ color: rgb(31, 24, 107);
/* oklch */ color: oklch(28.5% 0.136 277.1);

Tailwind

colors: {
  custom: {
    50: '#675696',
    500: '#1f186b',
    950: '#000000',
  },
}

SCSS

$custom: #1f186b;
$custom-light: #675696;
$custom-dark: #000000;

JSON

{
  "hex": "#1f186b",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 107
  },
  "hsl": {
    "h": 245.06,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28518,
    "c": 0.13642,
    "h": 277.1
  },
  "luminance": 0.02006
}

Semantic roles & 50–950 ramp

primary

#1F186B

secondary

#98A13E

accent

#E641D8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #1F186B

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

Preview Lab → · Contrast checker → · Palette generator →