#1F4891#1F4891

#1F4891 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 41.6% C 0.129 H 260.9°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#1F4891
RGB	rgb(31, 72, 145)
HSL	hsl(218, 65%, 35%)
HSV	hsv(218, 79%, 57%)
CMYK	cmyk(78.6%, 50.3%, 0%, 43.1%)
CIE-LAB	lab(31.74, 13.28, -44.43)
CIE-LCH	lch(31.74, 46.37, 286.64°)
OKLab	oklab(41.59% -0.0204 -0.1277)
OKLCH	oklch(41.59% 0.129 260.9)
XYZ	xyz(7.9914, 6.9695, 27.7066)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4891 #91681F

analogous

#1F8191 #1F4891 #2F1F91

triadic

#1F4891 #911F48 #48911F

tetradic

#1F4891 #911F81 #91681F #1F912F

square

#1F4891 #911F81 #91681F #1F912F

split-complementary

#1F4891 #912F1F #81911F

monochromatic

#09162C #142F5F #1F4891 #2A61C3 #5182DA

Accessibility & contrast

On white

8.77

#1F4891 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#1F4891 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4891

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4891	#FFFFFF	#000000	##FFFFFF
##1F4891	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D5094

Deuteranopia (green-blind)

#004690

Tritanopia (blue-blind)

#005965

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f4891;
/* rgb */ color: rgb(31, 72, 145);
/* oklch */ color: oklch(41.6% 0.129 260.9);

Tailwind

colors: {
  custom: {
    50: '#6d7ab2',
    500: '#1f4891',
    950: '#000000',
  },
}

SCSS

$custom: #1f4891;
$custom-light: #6d7ab2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4891",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 145
  },
  "hsl": {
    "h": 218.421,
    "s": 64.773,
    "l": 34.51
  },
  "oklch": {
    "l": 0.4159,
    "c": 0.12936,
    "h": 260.9
  },
  "luminance": 0.0697
}

Semantic roles & 50–950 ramp

primary

#1F4891

secondary

#BD954F

accent

#AB40E8

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4891

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

Preview Lab → · Contrast checker → · Palette generator →