#1F366D#1F366D

#1F366D is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.7% C 0.100 H 264.7°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#1F366D
RGB	rgb(31, 54, 109)
HSL	hsl(222, 56%, 27%)
HSV	hsv(222, 72%, 43%)
CMYK	cmyk(71.6%, 50.5%, 0%, 57.3%)
CIE-LAB	lab(23.78, 11.31, -34.70)
CIE-LCH	lch(23.78, 36.50, 288.06°)
OKLab	oklab(34.69% -0.0093 -0.0994)
OKLCH	oklch(34.69% 0.1 264.7)
XYZ	xyz(4.6436, 4.0333, 14.9988)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F366D #6D561F

analogous

#1F5D6D #1F366D #2F1F6D

triadic

#1F366D #6D1F36 #366D1F

tetradic

#1F366D #6D1F5D #6D561F #1F6D2F

square

#1F366D #6D1F5D #6D561F #1F6D2F

split-complementary

#1F366D #6D2F1F #5D6D1F

monochromatic

#070C18 #111E3D #1F366D #2D4E9D #3E67C8

Accessibility & contrast

On white

11.62

#1F366D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1F366D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F366D

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F366D	#FFFFFF	#000000	##FFFFFF
##1F366D	1.00	11.62	1.81	11.62
#FFFFFF	11.62	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#193C6F

Deuteranopia (green-blind)

#06356C

Tritanopia (blue-blind)

#00434C

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f366d;
/* rgb */ color: rgb(31, 54, 109);
/* oklch */ color: oklch(34.7% 0.100 264.7);

Tailwind

colors: {
  custom: {
    50: '#656c97',
    500: '#1f366d',
    950: '#000000',
  },
}

SCSS

$custom: #1f366d;
$custom-light: #656c97;
$custom-dark: #000000;

JSON

{
  "hex": "#1f366d",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 109
  },
  "hsl": {
    "h": 222.308,
    "s": 55.714,
    "l": 27.451
  },
  "oklch": {
    "l": 0.34687,
    "c": 0.09988,
    "h": 264.7
  },
  "luminance": 0.04034
}

Semantic roles & 50–950 ramp

primary

#1F366D

secondary

#A18647

accent

#B349DF

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1F366D

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

Preview Lab → · Contrast checker → · Palette generator →