#1F4491#1F4491

#1F4491 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 40.7% C 0.134 H 262.7°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#1F4491
RGB	rgb(31, 68, 145)
HSL	hsl(221, 65%, 35%)
HSV	hsv(221, 79%, 57%)
CMYK	cmyk(78.6%, 53.1%, 0%, 43.1%)
CIE-LAB	lab(30.57, 16.02, -46.32)
CIE-LCH	lch(30.57, 49.01, 289.07°)
OKLab	oklab(40.7% -0.0172 -0.1334)
OKLCH	oklch(40.7% 0.134 262.7)
XYZ	xyz(7.7412, 6.4690, 27.6232)
Luminance	0.0647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4491 #916C1F

analogous

#1F7D91 #1F4491 #331F91

triadic

#1F4491 #911F44 #44911F

tetradic

#1F4491 #911F7D #916C1F #1F9133

square

#1F4491 #911F7D #916C1F #1F9133

split-complementary

#1F4491 #91331F #7D911F

monochromatic

#09152C #142C5F #1F4491 #2A5CC3 #517DDA

Accessibility & contrast

On white

9.15

#1F4491 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1F4491 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4491

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4491	#FFFFFF	#000000	##FFFFFF
##1F4491	1.00	9.15	2.29	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F4D94

Deuteranopia (green-blind)

#00438F

Tritanopia (blue-blind)

#005763

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f4491;
/* rgb */ color: rgb(31, 68, 145);
/* oklch */ color: oklch(40.7% 0.134 262.7);

Tailwind

colors: {
  custom: {
    50: '#6d77b2',
    500: '#1f4491',
    950: '#000000',
  },
}

SCSS

$custom: #1f4491;
$custom-light: #6d77b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4491",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 145
  },
  "hsl": {
    "h": 220.526,
    "s": 64.773,
    "l": 34.51
  },
  "oklch": {
    "l": 0.40696,
    "c": 0.13448,
    "h": 262.7
  },
  "luminance": 0.0647
}

Semantic roles & 50–950 ramp

primary

#1F4491

secondary

#BD994F

accent

#B140E8

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4491

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

Preview Lab → · Contrast checker → · Palette generator →