#1F4897#1F4897

#1F4897 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.1% C 0.138 H 261.8°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#1F4897
RGB	rgb(31, 72, 151)
HSL	hsl(220, 66%, 36%)
HSV	hsv(220, 79%, 59%)
CMYK	cmyk(79.5%, 52.3%, 0%, 40.8%)
CIE-LAB	lab(32.17, 15.68, -47.40)
CIE-LCH	lch(32.17, 49.92, 288.31°)
OKLab	oklab(42.06% -0.0196 -0.1364)
OKLCH	oklch(42.06% 0.138 261.8)
XYZ	xyz(8.4663, 7.1594, 30.2079)
Luminance	0.0716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4897 #976E1F

analogous

#1F8497 #1F4897 #321F97

triadic

#1F4897 #971F48 #48971F

tetradic

#1F4897 #971F84 #976E1F #1F9732

square

#1F4897 #971F84 #976E1F #1F9732

split-complementary

#1F4897 #97321F #84971F

monochromatic

#0A1831 #153064 #1F4897 #2960CA #5483DC

Accessibility & contrast

On white

8.63

#1F4897 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1F4897 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4897

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4897	#FFFFFF	#000000	##FFFFFF
##1F4897	1.00	8.63	2.43	8.63
#FFFFFF	8.63	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14519A

Deuteranopia (green-blind)

#004695

Tritanopia (blue-blind)

#005B68

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1f4897;
/* rgb */ color: rgb(31, 72, 151);
/* oklch */ color: oklch(42.1% 0.138 261.8);

Tailwind

colors: {
  custom: {
    50: '#6e7ab6',
    500: '#1f4897',
    950: '#000000',
  },
}

SCSS

$custom: #1f4897;
$custom-light: #6e7ab6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4897",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 151
  },
  "hsl": {
    "h": 219.5,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.42055,
    "c": 0.13785,
    "h": 261.8
  },
  "luminance": 0.0716
}

Semantic roles & 50–950 ramp

primary

#1F4897

secondary

#BF9A52

accent

#AF3FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4897

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

Preview Lab → · Contrast checker → · Palette generator →