#1F4AA6#1F4AA6

#1F4AA6 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.7% C 0.156 H 262.8°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#1F4AA6
RGB	rgb(31, 74, 166)
HSL	hsl(221, 69%, 39%)
HSV	hsv(221, 81%, 65%)
CMYK	cmyk(81.3%, 55.4%, 0%, 34.9%)
CIE-LAB	lab(33.86, 20.30, -53.70)
CIE-LCH	lch(33.86, 57.41, 290.70°)
OKLab	oklab(43.7% -0.0195 -0.155)
OKLCH	oklch(43.7% 0.156 262.8)
XYZ	xyz(9.8943, 7.9409, 37.0803)
Luminance	0.0794 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4AA6 #A67B1F

analogous

#1F8DA6 #1F4AA6 #371FA6

triadic

#1F4AA6 #A61F4A #4AA61F

tetradic

#1F4AA6 #A61F8D #A67B1F #1FA637

square

#1F4AA6 #A61F8D #A67B1F #1FA637

split-complementary

#1F4AA6 #A6371F #8DA61F

monochromatic

#0C1C3F #153372 #1F4AA6 #2B62D7 #5E88E1

Accessibility & contrast

On white

8.11

#1F4AA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#1F4AA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4AA6

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4AA6	#FFFFFF	#000000	##FFFFFF
##1F4AA6	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056A9

Deuteranopia (green-blind)

#004AA4

Tritanopia (blue-blind)

#006170

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1f4aa6;
/* rgb */ color: rgb(31, 74, 166);
/* oklch */ color: oklch(43.7% 0.156 262.8);

Tailwind

colors: {
  custom: {
    50: '#727bc1',
    500: '#1f4aa6',
    950: '#000000',
  },
}

SCSS

$custom: #1f4aa6;
$custom-light: #727bc1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4aa6",
  "rgb": {
    "r": 31,
    "g": 74,
    "b": 166
  },
  "hsl": {
    "h": 220.889,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.43696,
    "c": 0.1562,
    "h": 262.8
  },
  "luminance": 0.07942
}

Semantic roles & 50–950 ramp

primary

#1F4AA6

secondary

#C5A45B

accent

#B43CEB

background

#F7F7FC

surface

#EDEDF8

border

#C8C8D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F4AA6

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

Preview Lab → · Contrast checker → · Palette generator →