#1F519A#1F519A

#1F519A is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.3% C 0.131 H 258.3°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#1F519A
RGB	rgb(31, 81, 154)
HSL	hsl(216, 66%, 36%)
HSV	hsv(216, 80%, 60%)
CMYK	cmyk(79.9%, 47.4%, 0%, 39.6%)
CIE-LAB	lab(35.02, 10.80, -44.61)
CIE-LCH	lch(35.02, 45.90, 283.61°)
OKLab	oklab(44.31% -0.0265 -0.1281)
OKLCH	oklch(44.31% 0.131 258.3)
XYZ	xyz(9.3381, 8.5082, 31.7157)
Luminance	0.0851 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F519A #9A681F

analogous

#1F8F9A #1F519A #2B1F9A

triadic

#1F519A #9A1F51 #519A1F

tetradic

#1F519A #9A1F8F #9A681F #1F9A2B

square

#1F519A #9A1F8F #9A681F #1F9A2B

split-complementary

#1F519A #9A2B1F #8F9A1F

monochromatic

#0A1B34 #153667 #1F519A #296CCD #568DDD

Accessibility & contrast

On white

7.77

#1F519A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1F519A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F519A

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F519A	#FFFFFF	#000000	##FFFFFF
##1F519A	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29589D

Deuteranopia (green-blind)

#074D99

Tritanopia (blue-blind)

#00626E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f519a;
/* rgb */ color: rgb(31, 81, 154);
/* oklch */ color: oklch(44.3% 0.131 258.3);

Tailwind

colors: {
  custom: {
    50: '#6e81b8',
    500: '#1f519a',
    950: '#000000',
  },
}

SCSS

$custom: #1f519a;
$custom-light: #6e81b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f519a",
  "rgb": {
    "r": 31,
    "g": 81,
    "b": 154
  },
  "hsl": {
    "h": 215.61,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.44309,
    "c": 0.13079,
    "h": 258.3
  },
  "luminance": 0.08509
}

Semantic roles & 50–950 ramp

primary

#1F519A

secondary

#C19554

accent

#A43EE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1F519A

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

Preview Lab → · Contrast checker → · Palette generator →