#1F4EA4#1F4EA4

#1F4EA4 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.4% C 0.148 H 261.2°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#1F4EA4
RGB	rgb(31, 78, 164)
HSL	hsl(219, 68%, 38%)
HSV	hsv(219, 81%, 64%)
CMYK	cmyk(81.1%, 52.4%, 0%, 35.7%)
CIE-LAB	lab(34.84, 16.80, -50.91)
CIE-LCH	lch(34.84, 53.61, 288.27°)
OKLab	oklab(44.4% -0.0226 -0.1467)
OKLCH	oklch(44.4% 0.148 261.2)
XYZ	xyz(9.9879, 8.4192, 36.2134)
Luminance	0.0842 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4EA4 #A4751F

analogous

#1F90A4 #1F4EA4 #321FA4

triadic

#1F4EA4 #A41F4E #4EA41F

tetradic

#1F4EA4 #A41F90 #A4751F #1FA432

square

#1F4EA4 #A41F90 #A4751F #1FA432

split-complementary

#1F4EA4 #A4321F #90A41F

monochromatic

#0C1D3D #153671 #1F4EA4 #2A67D7 #5D8BE0

Accessibility & contrast

On white

7.82

#1F4EA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#1F4EA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4EA4

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4EA4	#FFFFFF	#000000	##FFFFFF
##1F4EA4	1.00	7.82	2.68	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1258A7

Deuteranopia (green-blind)

#004CA2

Tritanopia (blue-blind)

#006371

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f4ea4;
/* rgb */ color: rgb(31, 78, 164);
/* oklch */ color: oklch(44.4% 0.148 261.2);

Tailwind

colors: {
  custom: {
    50: '#717ec0',
    500: '#1f4ea4',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ea4;
$custom-light: #717ec0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ea4",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 164
  },
  "hsl": {
    "h": 218.797,
    "s": 68.205,
    "l": 38.235
  },
  "oklch": {
    "l": 0.44395,
    "c": 0.14842,
    "h": 261.2
  },
  "luminance": 0.0842
}

Semantic roles & 50–950 ramp

primary

#1F4EA4

secondary

#C59F5A

accent

#AD3DEB

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F4EA4

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

Preview Lab → · Contrast checker → · Palette generator →