#1F4EA1#1F4EA1

#1F4EA1 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.2% C 0.144 H 260.8°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#1F4EA1
RGB	rgb(31, 78, 161)
HSL	hsl(218, 68%, 38%)
HSV	hsv(218, 81%, 63%)
CMYK	cmyk(80.7%, 51.6%, 0%, 36.9%)
CIE-LAB	lab(34.62, 15.61, -49.46)
CIE-LCH	lch(34.62, 51.87, 287.52°)
OKLab	oklab(44.16% -0.023 -0.1424)
OKLCH	oklch(44.16% 0.144 260.8)
XYZ	xyz(9.7202, 8.3121, 34.8034)
Luminance	0.0831 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4EA1 #A1721F

analogous

#1F8FA1 #1F4EA1 #311FA1

triadic

#1F4EA1 #A11F4E #4EA11F

tetradic

#1F4EA1 #A11F8F #A1721F #1FA131

square

#1F4EA1 #A11F8F #A1721F #1FA131

split-complementary

#1F4EA1 #A1311F #8FA11F

monochromatic

#0B1C3A #15356E #1F4EA1 #2967D4 #5B8BDF

Accessibility & contrast

On white

7.89

#1F4EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1F4EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4EA1

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4EA1	#FFFFFF	#000000	##FFFFFF
##1F4EA1	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1858A4

Deuteranopia (green-blind)

#004C9F

Tritanopia (blue-blind)

#006270

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1f4ea1;
/* rgb */ color: rgb(31, 78, 161);
/* oklch */ color: oklch(44.2% 0.144 260.8);

Tailwind

colors: {
  custom: {
    50: '#707ebd',
    500: '#1f4ea1',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ea1;
$custom-light: #707ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ea1",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 161
  },
  "hsl": {
    "h": 218.308,
    "s": 67.708,
    "l": 37.647
  },
  "oklch": {
    "l": 0.44161,
    "c": 0.14427,
    "h": 260.8
  },
  "luminance": 0.08313
}

Semantic roles & 50–950 ramp

primary

#1F4EA1

secondary

#C49D58

accent

#AC3DEB

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F4EA1

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

Preview Lab → · Contrast checker → · Palette generator →