#1F4EA6#1F4EA6

#1F4EA6 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.6% C 0.151 H 261.5°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#1F4EA6
RGB	rgb(31, 78, 166)
HSL	hsl(219, 69%, 39%)
HSV	hsv(219, 81%, 65%)
CMYK	cmyk(81.3%, 53%, 0%, 34.9%)
CIE-LAB	lab(34.99, 17.60, -51.87)
CIE-LCH	lch(34.99, 54.78, 288.74°)
OKLab	oklab(44.55% -0.0224 -0.1495)
OKLCH	oklch(44.55% 0.151 261.5)
XYZ	xyz(10.1699, 8.4920, 37.1721)
Luminance	0.0849 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4EA6 #A6771F

analogous

#1F91A6 #1F4EA6 #331FA6

triadic

#1F4EA6 #A61F4E #4EA61F

tetradic

#1F4EA6 #A61F91 #A6771F #1FA633

square

#1F4EA6 #A61F91 #A6771F #1FA633

split-complementary

#1F4EA6 #A6331F #91A61F

monochromatic

#0C1E3F #153672 #1F4EA6 #2B67D7 #5E8CE1

Accessibility & contrast

On white

7.78

#1F4EA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1F4EA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4EA6

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4EA6	#FFFFFF	#000000	##FFFFFF
##1F4EA6	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D59A9

Deuteranopia (green-blind)

#004CA4

Tritanopia (blue-blind)

#006472

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f4ea6;
/* rgb */ color: rgb(31, 78, 166);
/* oklch */ color: oklch(44.6% 0.151 261.5);

Tailwind

colors: {
  custom: {
    50: '#727ec1',
    500: '#1f4ea6',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ea6;
$custom-light: #727ec1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ea6",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 166
  },
  "hsl": {
    "h": 219.111,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.44552,
    "c": 0.15118,
    "h": 261.5
  },
  "luminance": 0.08493
}

Semantic roles & 50–950 ramp

primary

#1F4EA6

secondary

#C5A15B

accent

#AE3CEB

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F4EA6

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

Preview Lab → · Contrast checker → · Palette generator →