#1F4590#1F4590

#1F4590 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 40.8% C 0.132 H 262.1°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#1F4590
RGB	rgb(31, 69, 144)
HSL	hsl(220, 65%, 34%)
HSV	hsv(220, 78%, 56%)
CMYK	cmyk(78.5%, 52.1%, 0%, 43.5%)
CIE-LAB	lab(30.78, 14.93, -45.36)
CIE-LCH	lch(30.78, 47.75, 288.22°)
OKLab	oklab(40.84% -0.0181 -0.1305)
OKLCH	oklch(40.84% 0.132 262.1)
XYZ	xyz(7.7254, 6.5603, 27.2393)
Luminance	0.0656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4590 #906A1F

analogous

#1F7E90 #1F4590 #321F90

triadic

#1F4590 #901F45 #45901F

tetradic

#1F4590 #901F7E #906A1F #1F9032

square

#1F4590 #901F7E #906A1F #1F9032

split-complementary

#1F4590 #90321F #7E901F

monochromatic

#09152B #142D5E #1F4590 #2A5DC2 #507ED9

Accessibility & contrast

On white

9.08

#1F4590 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1F4590 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4590

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4590	#FFFFFF	#000000	##FFFFFF
##1F4590	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#154E93

Deuteranopia (green-blind)

#00448F

Tritanopia (blue-blind)

#005763

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f4590;
/* rgb */ color: rgb(31, 69, 144);
/* oklch */ color: oklch(40.8% 0.132 262.1);

Tailwind

colors: {
  custom: {
    50: '#6d78b1',
    500: '#1f4590',
    950: '#000000',
  },
}

SCSS

$custom: #1f4590;
$custom-light: #6d78b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4590",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 144
  },
  "hsl": {
    "h": 219.823,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.40838,
    "c": 0.13177,
    "h": 262.1
  },
  "luminance": 0.06561
}

Semantic roles & 50–950 ramp

primary

#1F4590

secondary

#BC974E

accent

#AF40E8

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4590

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

Preview Lab → · Contrast checker → · Palette generator →