#1F367F#1F367F

#1F367F is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.2% C 0.127 H 266.7°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#1F367F
RGB	rgb(31, 54, 127)
HSL	hsl(226, 61%, 31%)
HSV	hsv(226, 76%, 50%)
CMYK	cmyk(75.6%, 57.5%, 0%, 50.2%)
CIE-LAB	lab(25.14, 18.53, -43.95)
CIE-LCH	lch(25.14, 47.69, 292.87°)
OKLab	oklab(36.15% -0.0074 -0.1266)
OKLCH	oklch(36.15% 0.127 266.7)
XYZ	xyz(5.7137, 4.4613, 20.6346)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F367F #7F681F

analogous

#1F667F #1F367F #381F7F

triadic

#1F367F #7F1F36 #367F1F

tetradic

#1F367F #7F1F66 #7F681F #1F7F38

square

#1F367F #7F1F66 #7F681F #1F7F38

split-complementary

#1F367F #7F381F #667F1F

monochromatic

#070C1D #13214E #1F367F #2B4BB0 #4668D2

Accessibility & contrast

On white

11.10

#1F367F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1F367F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F367F

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F367F	#FFFFFF	#000000	##FFFFFF
##1F367F	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004082

Deuteranopia (green-blind)

#00377E

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f367f;
/* rgb */ color: rgb(31, 54, 127);
/* oklch */ color: oklch(36.2% 0.127 266.7);

Tailwind

colors: {
  custom: {
    50: '#696ca5',
    500: '#1f367f',
    950: '#000000',
  },
}

SCSS

$custom: #1f367f;
$custom-light: #696ca5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f367f",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 127
  },
  "hsl": {
    "h": 225.625,
    "s": 60.759,
    "l": 30.98
  },
  "oklch": {
    "l": 0.36151,
    "c": 0.12685,
    "h": 266.7
  },
  "luminance": 0.04462
}

Semantic roles & 50–950 ramp

primary

#1F367F

secondary

#B29948

accent

#BE44E4

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1F367F

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

Preview Lab → · Contrast checker → · Palette generator →