#1F4EA0#1F4EA0

#1F4EA0 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.1% C 0.143 H 260.7°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F4EA0
RGB	rgb(31, 78, 160)
HSL	hsl(218, 68%, 37%)
HSV	hsv(218, 81%, 63%)
CMYK	cmyk(80.6%, 51.2%, 0%, 37.3%)
CIE-LAB	lab(34.55, 15.21, -48.98)
CIE-LCH	lch(34.55, 51.29, 287.25°)
OKLab	oklab(44.08% -0.0231 -0.141)
OKLCH	oklch(44.08% 0.143 260.7)
XYZ	xyz(9.6323, 8.2770, 34.3408)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4EA0 #A0711F

analogous

#1F8EA0 #1F4EA0 #311FA0

triadic

#1F4EA0 #A01F4E #4EA01F

tetradic

#1F4EA0 #A01F8E #A0711F #1FA031

square

#1F4EA0 #A01F8E #A0711F #1FA031

split-complementary

#1F4EA0 #A0311F #8EA01F

monochromatic

#0B1C39 #15356D #1F4EA0 #2967D3 #5A8BDF

Accessibility & contrast

On white

7.91

#1F4EA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1F4EA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4EA0

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4EA0	#FFFFFF	#000000	##FFFFFF
##1F4EA0	1.00	7.91	2.66	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A57A3

Deuteranopia (green-blind)

#004C9E

Tritanopia (blue-blind)

#00626F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1f4ea0;
/* rgb */ color: rgb(31, 78, 160);
/* oklch */ color: oklch(44.1% 0.143 260.7);

Tailwind

colors: {
  custom: {
    50: '#707ebd',
    500: '#1f4ea0',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ea0;
$custom-light: #707ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ea0",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 160
  },
  "hsl": {
    "h": 218.14,
    "s": 67.539,
    "l": 37.451
  },
  "oklch": {
    "l": 0.44083,
    "c": 0.14288,
    "h": 260.7
  },
  "luminance": 0.08278
}

Semantic roles & 50–950 ramp

primary

#1F4EA0

secondary

#C39C58

accent

#AB3DEA

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F4EA0

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

Preview Lab → · Contrast checker → · Palette generator →