#1F376D#1F376D

#1F376D is a dark, moderate blue. Relative luminance 0.041; OKLCH L 34.9% C 0.099 H 264.0°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#1F376D
RGB	rgb(31, 55, 109)
HSL	hsl(222, 56%, 27%)
HSV	hsv(222, 72%, 43%)
CMYK	cmyk(71.6%, 49.5%, 0%, 57.3%)
CIE-LAB	lab(24.09, 10.61, -34.21)
CIE-LCH	lch(24.09, 35.82, 287.23°)
OKLab	oklab(34.92% -0.0103 -0.098)
OKLCH	oklch(34.92% 0.099 264)
XYZ	xyz(4.6906, 4.1273, 15.0145)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F376D #6D551F

analogous

#1F5E6D #1F376D #2E1F6D

triadic

#1F376D #6D1F37 #376D1F

tetradic

#1F376D #6D1F5E #6D551F #1F6D2E

square

#1F376D #6D1F5E #6D551F #1F6D2E

split-complementary

#1F376D #6D2E1F #5E6D1F

monochromatic

#070C18 #111F3D #1F376D #2D4F9D #3E69C8

Accessibility & contrast

On white

11.50

#1F376D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1F376D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F376D

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F376D	#FFFFFF	#000000	##FFFFFF
##1F376D	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3D6F

Deuteranopia (green-blind)

#0A366C

Tritanopia (blue-blind)

#00444C

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f376d;
/* rgb */ color: rgb(31, 55, 109);
/* oklch */ color: oklch(34.9% 0.099 264.0);

Tailwind

colors: {
  custom: {
    50: '#656d97',
    500: '#1f376d',
    950: '#000000',
  },
}

SCSS

$custom: #1f376d;
$custom-light: #656d97;
$custom-dark: #000000;

JSON

{
  "hex": "#1f376d",
  "rgb": {
    "r": 31,
    "g": 55,
    "b": 109
  },
  "hsl": {
    "h": 221.538,
    "s": 55.714,
    "l": 27.451
  },
  "oklch": {
    "l": 0.34922,
    "c": 0.09852,
    "h": 264
  },
  "luminance": 0.04128
}

Semantic roles & 50–950 ramp

primary

#1F376D

secondary

#A18547

accent

#B149DF

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1F376D

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

Preview Lab → · Contrast checker → · Palette generator →