#1F4E97#1F4E97

#1F4E97 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.4% C 0.130 H 259.2°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E97
RGB	rgb(31, 78, 151)
HSL	hsl(217, 66%, 36%)
HSV	hsv(217, 79%, 59%)
CMYK	cmyk(79.5%, 48.3%, 0%, 40.8%)
CIE-LAB	lab(33.93, 11.62, -44.55)
CIE-LCH	lch(33.93, 46.04, 284.61°)
OKLab	oklab(43.4% -0.0245 -0.128)
OKLCH	oklch(43.4% 0.13 259.2)
XYZ	xyz(8.8733, 7.9734, 30.3435)
Luminance	0.0797 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E97 #97681F

analogous

#1F8A97 #1F4E97 #2C1F97

triadic

#1F4E97 #971F4E #4E971F

tetradic

#1F4E97 #971F8A #97681F #1F972C

square

#1F4E97 #971F8A #97681F #1F972C

split-complementary

#1F4E97 #972C1F #8A971F

monochromatic

#0A1A31 #153464 #1F4E97 #2968CA #548ADC

Accessibility & contrast

On white

8.09

#1F4E97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#1F4E97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E97

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E97	#FFFFFF	#000000	##FFFFFF
##1F4E97	1.00	8.09	2.59	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25569A

Deuteranopia (green-blind)

#004B96

Tritanopia (blue-blind)

#005F6B

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1f4e97;
/* rgb */ color: rgb(31, 78, 151);
/* oklch */ color: oklch(43.4% 0.130 259.2);

Tailwind

colors: {
  custom: {
    50: '#6e7fb6',
    500: '#1f4e97',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e97;
$custom-light: #6e7fb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e97",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 151
  },
  "hsl": {
    "h": 216.5,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.43403,
    "c": 0.13031,
    "h": 259.2
  },
  "luminance": 0.07974
}

Semantic roles & 50–950 ramp

primary

#1F4E97

secondary

#BF9552

accent

#A63FE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1F4E97

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

Preview Lab → · Contrast checker → · Palette generator →