#1F366A#1F366A

#1F366A is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.5% C 0.095 H 264.1°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#1F366A
RGB	rgb(31, 54, 106)
HSL	hsl(222, 55%, 27%)
HSV	hsv(222, 71%, 42%)
CMYK	cmyk(70.8%, 49.1%, 0%, 58.4%)
CIE-LAB	lab(23.57, 10.11, -33.11)
CIE-LCH	lch(23.57, 34.62, 286.98°)
OKLab	oklab(34.46% -0.0098 -0.0948)
OKLCH	oklch(34.46% 0.095 264.1)
XYZ	xyz(4.4848, 3.9698, 14.1628)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F366A #6A531F

analogous

#1F5C6A #1F366A #2E1F6A

triadic

#1F366A #6A1F36 #366A1F

tetradic

#1F366A #6A1F5C #6A531F #1F6A2E

square

#1F366A #6A1F5C #6A531F #1F6A2E

split-complementary

#1F366A #6A2E1F #5C6A1F

monochromatic

#070C18 #111E3B #1F366A #2D4E99 #3D67C6

Accessibility & contrast

On white

11.71

#1F366A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1F366A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F366A

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F366A	#FFFFFF	#000000	##FFFFFF
##1F366A	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C3C6C

Deuteranopia (green-blind)

#0D3569

Tritanopia (blue-blind)

#00424A

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f366a;
/* rgb */ color: rgb(31, 54, 106);
/* oklch */ color: oklch(34.5% 0.095 264.1);

Tailwind

colors: {
  custom: {
    50: '#646c95',
    500: '#1f366a',
    950: '#000000',
  },
}

SCSS

$custom: #1f366a;
$custom-light: #646c95;
$custom-dark: #000000;

JSON

{
  "hex": "#1f366a",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 106
  },
  "hsl": {
    "h": 221.6,
    "s": 54.745,
    "l": 26.863
  },
  "oklch": {
    "l": 0.34459,
    "c": 0.09526,
    "h": 264.1
  },
  "luminance": 0.0397
}

Semantic roles & 50–950 ramp

primary

#1F366A

secondary

#9E8347

accent

#B14ADE

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1F366A

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

Preview Lab → · Contrast checker → · Palette generator →