#1F4B97#1F4B97

#1F4B97 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 42.7% C 0.134 H 260.5°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#1F4B97
RGB	rgb(31, 75, 151)
HSL	hsl(218, 66%, 36%)
HSV	hsv(218, 79%, 59%)
CMYK	cmyk(79.5%, 50.3%, 0%, 40.8%)
CIE-LAB	lab(33.04, 13.64, -45.98)
CIE-LCH	lch(33.04, 47.96, 286.53°)
OKLab	oklab(42.72% -0.022 -0.1322)
OKLCH	oklch(42.72% 0.134 260.5)
XYZ	xyz(8.6650, 7.5568, 30.2741)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4B97 #976B1F

analogous

#1F8797 #1F4B97 #2F1F97

triadic

#1F4B97 #971F4B #4B971F

tetradic

#1F4B97 #971F87 #976B1F #1F972F

square

#1F4B97 #971F87 #976B1F #1F972F

split-complementary

#1F4B97 #972F1F #87971F

monochromatic

#0A1931 #153264 #1F4B97 #2964CA #5486DC

Accessibility & contrast

On white

8.36

#1F4B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1F4B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4B97

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4B97	#FFFFFF	#000000	##FFFFFF
##1F4B97	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E549A

Deuteranopia (green-blind)

#004995

Tritanopia (blue-blind)

#005D6A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4b97;
/* rgb */ color: rgb(31, 75, 151);
/* oklch */ color: oklch(42.7% 0.134 260.5);

Tailwind

colors: {
  custom: {
    50: '#6e7cb6',
    500: '#1f4b97',
    950: '#000000',
  },
}

SCSS

$custom: #1f4b97;
$custom-light: #6e7cb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4b97",
  "rgb": {
    "r": 31,
    "g": 75,
    "b": 151
  },
  "hsl": {
    "h": 218,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.42724,
    "c": 0.13405,
    "h": 260.5
  },
  "luminance": 0.07558
}

Semantic roles & 50–950 ramp

primary

#1F4B97

secondary

#BF9752

accent

#AB3FE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4B97

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

Preview Lab → · Contrast checker → · Palette generator →