#1F4C97#1F4C97

#1F4C97 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 42.9% C 0.133 H 260.1°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F4C97
RGB	rgb(31, 76, 151)
HSL	hsl(218, 66%, 36%)
HSV	hsv(218, 79%, 59%)
CMYK	cmyk(79.5%, 49.7%, 0%, 40.8%)
CIE-LAB	lab(33.34, 12.97, -45.51)
CIE-LCH	lch(33.34, 47.32, 285.91°)
OKLab	oklab(42.95% -0.0228 -0.1308)
OKLCH	oklch(42.95% 0.133 260.1)
XYZ	xyz(8.7334, 7.6935, 30.2969)
Luminance	0.0770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4C97 #976A1F

analogous

#1F8897 #1F4C97 #2E1F97

triadic

#1F4C97 #971F4C #4C971F

tetradic

#1F4C97 #971F88 #976A1F #1F972E

square

#1F4C97 #971F88 #976A1F #1F972E

split-complementary

#1F4C97 #972E1F #88971F

monochromatic

#0A1931 #153264 #1F4C97 #2966CA #5487DC

Accessibility & contrast

On white

8.27

#1F4C97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1F4C97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4C97

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4C97	#FFFFFF	#000000	##FFFFFF
##1F4C97	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20549A

Deuteranopia (green-blind)

#004996

Tritanopia (blue-blind)

#005E6A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4c97;
/* rgb */ color: rgb(31, 76, 151);
/* oklch */ color: oklch(42.9% 0.133 260.1);

Tailwind

colors: {
  custom: {
    50: '#6e7db6',
    500: '#1f4c97',
    950: '#000000',
  },
}

SCSS

$custom: #1f4c97;
$custom-light: #6e7db6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4c97",
  "rgb": {
    "r": 31,
    "g": 76,
    "b": 151
  },
  "hsl": {
    "h": 217.5,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.42949,
    "c": 0.1328,
    "h": 260.1
  },
  "luminance": 0.07695
}

Semantic roles & 50–950 ramp

primary

#1F4C97

secondary

#BF9752

accent

#A93FE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4C97

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

Preview Lab → · Contrast checker → · Palette generator →