#1F366C#1F366C

#1F366C is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.6% C 0.098 H 264.5°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#1F366C
RGB	rgb(31, 54, 108)
HSL	hsl(222, 55%, 27%)
HSV	hsv(222, 71%, 42%)
CMYK	cmyk(71.3%, 50%, 0%, 57.6%)
CIE-LAB	lab(23.71, 10.91, -34.17)
CIE-LCH	lch(23.71, 35.87, 287.71°)
OKLab	oklab(34.61% -0.0095 -0.0979)
OKLCH	oklch(34.61% 0.098 264.5)
XYZ	xyz(4.5901, 4.0119, 14.7169)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F366C #6C551F

analogous

#1F5D6C #1F366C #2F1F6C

triadic

#1F366C #6C1F36 #366C1F

tetradic

#1F366C #6C1F5D #6C551F #1F6C2F

square

#1F366C #6C1F5D #6C551F #1F6C2F

split-complementary

#1F366C #6C2F1F #5D6C1F

monochromatic

#070C18 #111E3C #1F366C #2D4E9C #3E67C8

Accessibility & contrast

On white

11.65

#1F366C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1F366C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F366C

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F366C	#FFFFFF	#000000	##FFFFFF
##1F366C	1.00	11.65	1.80	11.65
#FFFFFF	11.65	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A3C6E

Deuteranopia (green-blind)

#09356B

Tritanopia (blue-blind)

#00434B

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f366c;
/* rgb */ color: rgb(31, 54, 108);
/* oklch */ color: oklch(34.6% 0.098 264.5);

Tailwind

colors: {
  custom: {
    50: '#656c96',
    500: '#1f366c',
    950: '#000000',
  },
}

SCSS

$custom: #1f366c;
$custom-light: #656c96;
$custom-dark: #000000;

JSON

{
  "hex": "#1f366c",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 108
  },
  "hsl": {
    "h": 222.078,
    "s": 55.396,
    "l": 27.255
  },
  "oklch": {
    "l": 0.34611,
    "c": 0.09835,
    "h": 264.5
  },
  "luminance": 0.04012
}

Semantic roles & 50–950 ramp

primary

#1F366C

secondary

#A08547

accent

#B249DF

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1F366C

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

Preview Lab → · Contrast checker → · Palette generator →