#1F386B#1F386B

#1F386B is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.0% C 0.094 H 262.8°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#1F386B
RGB	rgb(31, 56, 107)
HSL	hsl(220, 55%, 27%)
HSV	hsv(220, 71%, 42%)
CMYK	cmyk(71%, 47.7%, 0%, 58%)
CIE-LAB	lab(24.26, 9.10, -32.65)
CIE-LCH	lch(24.26, 33.89, 285.58°)
OKLab	oklab(35.01% -0.0117 -0.0934)
OKLCH	oklch(35.01% 0.094 262.8)
XYZ	xyz(4.6322, 4.1807, 14.4699)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F386B #6B521F

analogous

#1F5E6B #1F386B #2C1F6B

triadic

#1F386B #6B1F38 #386B1F

tetradic

#1F386B #6B1F5E #6B521F #1F6B2C

square

#1F386B #6B1F5E #6B521F #1F6B2C

split-complementary

#1F386B #6B2C1F #5E6B1F

monochromatic

#070C18 #111F3C #1F386B #2D519A #3D6BC7

Accessibility & contrast

On white

11.44

#1F386B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1F386B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F386B

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F386B	#FFFFFF	#000000	##FFFFFF
##1F386B	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F3D6D

Deuteranopia (green-blind)

#11366A

Tritanopia (blue-blind)

#00444C

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f386b;
/* rgb */ color: rgb(31, 56, 107);
/* oklch */ color: oklch(35.0% 0.094 262.8);

Tailwind

colors: {
  custom: {
    50: '#646e96',
    500: '#1f386b',
    950: '#000000',
  },
}

SCSS

$custom: #1f386b;
$custom-light: #646e96;
$custom-dark: #000000;

JSON

{
  "hex": "#1f386b",
  "rgb": {
    "r": 31,
    "g": 56,
    "b": 107
  },
  "hsl": {
    "h": 220.263,
    "s": 55.072,
    "l": 27.059
  },
  "oklch": {
    "l": 0.3501,
    "c": 0.0941,
    "h": 262.8
  },
  "luminance": 0.04181
}

Semantic roles & 50–950 ramp

primary

#1F386B

secondary

#9F8247

accent

#AD49DE

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1F386B

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

Preview Lab → · Contrast checker → · Palette generator →