#1F4797#1F4797

#1F4797 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 41.8% C 0.139 H 262.2°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#1F4797
RGB	rgb(31, 71, 151)
HSL	hsl(220, 66%, 36%)
HSV	hsv(220, 79%, 59%)
CMYK	cmyk(79.5%, 53%, 0%, 40.8%)
CIE-LAB	lab(31.88, 16.36, -47.86)
CIE-LCH	lch(31.88, 50.58, 288.88°)
OKLab	oklab(41.84% -0.0188 -0.1378)
OKLCH	oklch(41.84% 0.139 262.2)
XYZ	xyz(8.4022, 7.0312, 30.1865)
Luminance	0.0703 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4797 #976F1F

analogous

#1F8397 #1F4797 #331F97

triadic

#1F4797 #971F47 #47971F

tetradic

#1F4797 #971F83 #976F1F #1F9733

square

#1F4797 #971F83 #976F1F #1F9733

split-complementary

#1F4797 #97331F #83971F

monochromatic

#0A1731 #152F64 #1F4797 #295FCA #5482DC

Accessibility & contrast

On white

8.73

#1F4797 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1F4797 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4797

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4797	#FFFFFF	#000000	##FFFFFF
##1F4797	1.00	8.73	2.41	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10519A

Deuteranopia (green-blind)

#004695

Tritanopia (blue-blind)

#005A68

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f4797;
/* rgb */ color: rgb(31, 71, 151);
/* oklch */ color: oklch(41.8% 0.139 262.2);

Tailwind

colors: {
  custom: {
    50: '#6e79b6',
    500: '#1f4797',
    950: '#000000',
  },
}

SCSS

$custom: #1f4797;
$custom-light: #6e79b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4797",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 151
  },
  "hsl": {
    "h": 220,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.41835,
    "c": 0.13913,
    "h": 262.2
  },
  "luminance": 0.07032
}

Semantic roles & 50–950 ramp

primary

#1F4797

secondary

#BF9B52

accent

#B03FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4797

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

Preview Lab → · Contrast checker → · Palette generator →