#1F4FA6#1F4FA6

#1F4FA6 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.8% C 0.150 H 261.1°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#1F4FA6
RGB	rgb(31, 79, 166)
HSL	hsl(219, 69%, 39%)
HSV	hsv(219, 81%, 65%)
CMYK	cmyk(81.3%, 52.4%, 0%, 34.9%)
CIE-LAB	lab(35.27, 16.93, -51.41)
CIE-LCH	lch(35.27, 54.13, 288.22°)
OKLab	oklab(44.77% -0.0231 -0.1481)
OKLCH	oklch(44.77% 0.15 261.1)
XYZ	xyz(10.2415, 8.6352, 37.1960)
Luminance	0.0864 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4FA6 #A6761F

analogous

#1F92A6 #1F4FA6 #331FA6

triadic

#1F4FA6 #A61F4F #4FA61F

tetradic

#1F4FA6 #A61F92 #A6761F #1FA633

square

#1F4FA6 #A61F92 #A6761F #1FA633

split-complementary

#1F4FA6 #A6331F #92A61F

monochromatic

#0C1E3F #153672 #1F4FA6 #2B68D7 #5E8DE1

Accessibility & contrast

On white

7.70

#1F4FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#1F4FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4FA6

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4FA6	#FFFFFF	#000000	##FFFFFF
##1F4FA6	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1259A9

Deuteranopia (green-blind)

#004DA4

Tritanopia (blue-blind)

#006473

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f4fa6;
/* rgb */ color: rgb(31, 79, 166);
/* oklch */ color: oklch(44.8% 0.150 261.1);

Tailwind

colors: {
  custom: {
    50: '#727fc1',
    500: '#1f4fa6',
    950: '#000000',
  },
}

SCSS

$custom: #1f4fa6;
$custom-light: #727fc1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4fa6",
  "rgb": {
    "r": 31,
    "g": 79,
    "b": 166
  },
  "hsl": {
    "h": 218.667,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.44769,
    "c": 0.14992,
    "h": 261.1
  },
  "luminance": 0.08636
}

Semantic roles & 50–950 ramp

primary

#1F4FA6

secondary

#C5A05B

accent

#AD3CEB

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F4FA6

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

Preview Lab → · Contrast checker → · Palette generator →