#1F4687#1F4687

#1F4687 is a dark, moderate blue. Relative luminance 0.064; OKLCH L 40.4% C 0.118 H 260.0°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#1F4687
RGB	rgb(31, 70, 135)
HSL	hsl(218, 63%, 33%)
HSV	hsv(218, 77%, 53%)
CMYK	cmyk(77%, 48.1%, 0%, 47.1%)
CIE-LAB	lab(30.45, 10.63, -40.36)
CIE-LCH	lch(30.45, 41.74, 284.76°)
OKLab	oklab(40.38% -0.0203 -0.1158)
OKLCH	oklch(40.38% 0.118 260)
XYZ	xyz(7.1268, 6.4201, 23.7806)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4687 #87601F

analogous

#1F7A87 #1F4687 #2C1F87

triadic

#1F4687 #871F46 #46871F

tetradic

#1F4687 #871F7A #87601F #1F872C

square

#1F4687 #871F7A #87601F #1F872C

split-complementary

#1F4687 #872C1F #7A871F

monochromatic

#081223 #142C55 #1F4687 #2A60B9 #4B7FD6

Accessibility & contrast

On white

9.19

#1F4687 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1F4687 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4687

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4687	#FFFFFF	#000000	##FFFFFF
##1F4687	1.00	9.19	2.28	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234D89

Deuteranopia (green-blind)

#084386

Tritanopia (blue-blind)

#005560

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f4687;
/* rgb */ color: rgb(31, 70, 135);
/* oklch */ color: oklch(40.4% 0.118 260.0);

Tailwind

colors: {
  custom: {
    50: '#6a78aa',
    500: '#1f4687',
    950: '#000000',
  },
}

SCSS

$custom: #1f4687;
$custom-light: #6a78aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4687",
  "rgb": {
    "r": 31,
    "g": 70,
    "b": 135
  },
  "hsl": {
    "h": 217.5,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.40379,
    "c": 0.11756,
    "h": 260
  },
  "luminance": 0.06421
}

Semantic roles & 50–950 ramp

primary

#1F4687

secondary

#B88F4A

accent

#A842E6

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1F4687

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

Preview Lab → · Contrast checker → · Palette generator →