#1F4BA6#1F4BA6

#1F4BA6 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 43.9% C 0.155 H 262.5°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#1F4BA6
RGB	rgb(31, 75, 166)
HSL	hsl(220, 69%, 39%)
HSV	hsv(220, 81%, 65%)
CMYK	cmyk(81.3%, 54.8%, 0%, 34.9%)
CIE-LAB	lab(34.14, 19.62, -53.25)
CIE-LCH	lch(34.14, 56.75, 290.23°)
OKLab	oklab(43.91% -0.0202 -0.1536)
OKLCH	oklch(43.91% 0.155 262.5)
XYZ	xyz(9.9616, 8.0754, 37.1027)
Luminance	0.0808 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4BA6 #A67A1F

analogous

#1F8EA6 #1F4BA6 #361FA6

triadic

#1F4BA6 #A61F4B #4BA61F

tetradic

#1F4BA6 #A61F8E #A67A1F #1FA636

square

#1F4BA6 #A61F8E #A67A1F #1FA636

split-complementary

#1F4BA6 #A6361F #8EA61F

monochromatic

#0C1C3F #153472 #1F4BA6 #2B63D7 #5E89E1

Accessibility & contrast

On white

8.03

#1F4BA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#1F4BA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4BA6

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4BA6	#FFFFFF	#000000	##FFFFFF
##1F4BA6	1.00	8.03	2.62	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057A9

Deuteranopia (green-blind)

#004AA4

Tritanopia (blue-blind)

#006171

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1f4ba6;
/* rgb */ color: rgb(31, 75, 166);
/* oklch */ color: oklch(43.9% 0.155 262.5);

Tailwind

colors: {
  custom: {
    50: '#727cc1',
    500: '#1f4ba6',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ba6;
$custom-light: #727cc1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ba6",
  "rgb": {
    "r": 31,
    "g": 75,
    "b": 166
  },
  "hsl": {
    "h": 220.444,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.43908,
    "c": 0.15494,
    "h": 262.5
  },
  "luminance": 0.08077
}

Semantic roles & 50–950 ramp

primary

#1F4BA6

secondary

#C5A35B

accent

#B23CEB

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F4BA6

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

Preview Lab → · Contrast checker → · Palette generator →