#1F367D#1F367D

#1F367D is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.0% C 0.124 H 266.5°. Best body text is #FFFFFF at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#1F367D
RGB	rgb(31, 54, 125)
HSL	hsl(225, 60%, 31%)
HSV	hsv(225, 75%, 49%)
CMYK	cmyk(75.2%, 56.8%, 0%, 51%)
CIE-LAB	lab(24.98, 17.73, -42.95)
CIE-LCH	lch(24.98, 46.46, 292.44°)
OKLab	oklab(35.98% -0.0075 -0.1237)
OKLCH	oklch(35.98% 0.124 266.5)
XYZ	xyz(5.5846, 4.4097, 19.9549)
Luminance	0.0441 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F367D #7D661F

analogous

#1F657D #1F367D #371F7D

triadic

#1F367D #7D1F36 #367D1F

tetradic

#1F367D #7D1F65 #7D661F #1F7D37

square

#1F367D #7D1F65 #7D661F #1F7D37

split-complementary

#1F367D #7D371F #657D1F

monochromatic

#070C1B #13214C #1F367D #2B4BAE #4568D1

Accessibility & contrast

On white

11.16

#1F367D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1F367D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F367D

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F367D	#FFFFFF	#000000	##FFFFFF
##1F367D	1.00	11.16	1.88	11.16
#FFFFFF	11.16	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00407F

Deuteranopia (green-blind)

#00377C

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f367d;
/* rgb */ color: rgb(31, 54, 125);
/* oklch */ color: oklch(36.0% 0.124 266.5);

Tailwind

colors: {
  custom: {
    50: '#696ca3',
    500: '#1f367d',
    950: '#000000',
  },
}

SCSS

$custom: #1f367d;
$custom-light: #696ca3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f367d",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 125
  },
  "hsl": {
    "h": 225.319,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.35981,
    "c": 0.12393,
    "h": 266.5
  },
  "luminance": 0.0441
}

Semantic roles & 50–950 ramp

primary

#1F367D

secondary

#B09748

accent

#BC44E3

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1F367D

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

Preview Lab → · Contrast checker → · Palette generator →