#1F4087#1F4087

#1F4087 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.0% C 0.125 H 263.1°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#1F4087
RGB	rgb(31, 64, 135)
HSL	hsl(221, 63%, 33%)
HSV	hsv(221, 77%, 53%)
CMYK	cmyk(77%, 52.6%, 0%, 47.1%)
CIE-LAB	lab(28.66, 14.76, -43.24)
CIE-LCH	lch(28.66, 45.69, 288.85°)
OKLab	oklab(39.01% -0.015 -0.1244)
OKLCH	oklch(39.01% 0.125 263.1)
XYZ	xyz(6.7701, 5.7066, 23.6617)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4087 #87661F

analogous

#1F7487 #1F4087 #321F87

triadic

#1F4087 #871F40 #40871F

tetradic

#1F4087 #871F74 #87661F #1F8732

square

#1F4087 #871F74 #87661F #1F8732

split-complementary

#1F4087 #87321F #74871F

monochromatic

#081123 #142855 #1F4087 #2A58B9 #4B77D6

Accessibility & contrast

On white

9.81

#1F4087 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1F4087 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4087

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4087	#FFFFFF	#000000	##FFFFFF
##1F4087	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13498A

Deuteranopia (green-blind)

#003F86

Tritanopia (blue-blind)

#00515D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f4087;
/* rgb */ color: rgb(31, 64, 135);
/* oklch */ color: oklch(39.0% 0.125 263.1);

Tailwind

colors: {
  custom: {
    50: '#6b74aa',
    500: '#1f4087',
    950: '#000000',
  },
}

SCSS

$custom: #1f4087;
$custom-light: #6b74aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4087",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 135
  },
  "hsl": {
    "h": 220.962,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.3901,
    "c": 0.1253,
    "h": 263.1
  },
  "luminance": 0.05707
}

Semantic roles & 50–950 ramp

primary

#1F4087

secondary

#B8954A

accent

#B242E6

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1F4087

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

Preview Lab → · Contrast checker → · Palette generator →