#1F4E9D#1F4E9D

#1F4E9D is a dark, vivid blue. Relative luminance 0.082; OKLCH L 43.9% C 0.139 H 260.2°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E9D
RGB	rgb(31, 78, 157)
HSL	hsl(218, 67%, 37%)
HSV	hsv(218, 80%, 62%)
CMYK	cmyk(80.3%, 50.3%, 0%, 38.4%)
CIE-LAB	lab(34.34, 14.02, -47.51)
CIE-LCH	lch(34.34, 49.54, 286.43°)
OKLab	oklab(43.85% -0.0236 -0.1367)
OKLCH	oklch(43.85% 0.139 260.2)
XYZ	xyz(9.3731, 8.1733, 32.9754)
Luminance	0.0817 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E9D #9D6E1F

analogous

#1F8D9D #1F4E9D #2F1F9D

triadic

#1F4E9D #9D1F4E #4E9D1F

tetradic

#1F4E9D #9D1F8D #9D6E1F #1F9D2F

square

#1F4E9D #9D1F8D #9D6E1F #1F9D2F

split-complementary

#1F4E9D #9D2F1F #8D9D1F

monochromatic

#0B1B37 #15356A #1F4E9D #2967D0 #588ADE

Accessibility & contrast

On white

7.97

#1F4E9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#1F4E9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E9D

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E9D	#FFFFFF	#000000	##FFFFFF
##1F4E9D	1.00	7.97	2.63	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E57A0

Deuteranopia (green-blind)

#004B9B

Tritanopia (blue-blind)

#00616E

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1f4e9d;
/* rgb */ color: rgb(31, 78, 157);
/* oklch */ color: oklch(43.9% 0.139 260.2);

Tailwind

colors: {
  custom: {
    50: '#6f7eba',
    500: '#1f4e9d',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e9d;
$custom-light: #6f7eba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e9d",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 157
  },
  "hsl": {
    "h": 217.619,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.43853,
    "c": 0.1387,
    "h": 260.2
  },
  "luminance": 0.08174
}

Semantic roles & 50–950 ramp

primary

#1F4E9D

secondary

#C29A56

accent

#AA3EEA

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F4E9D

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

Preview Lab → · Contrast checker → · Palette generator →