#1A3FA0#1A3FA0

#1A3FA0 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.7% C 0.163 H 264.3°. Best body text is #FFFFFF at 9.28:1 contrast (WCAG AA passes).

Color values

HEX	#1A3FA0
RGB	rgb(26, 63, 160)
HSL	hsl(223, 72%, 36%)
HSV	hsv(223, 84%, 63%)
CMYK	cmyk(83.8%, 60.6%, 0%, 37.3%)
CIE-LAB	lab(30.19, 24.93, -56.08)
CIE-LCH	lch(30.19, 61.37, 293.96°)
OKLab	oklab(40.74% -0.0162 -0.1622)
OKLCH	oklch(40.74% 0.163 264.3)
XYZ	xyz(8.5464, 6.3116, 34.0187)
Luminance	0.0631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3FA0 #A07B1A

analogous

#1A82A0 #1A3FA0 #381AA0

triadic

#1A3FA0 #A01A3F #3FA01A

tetradic

#1A3FA0 #A01A82 #A07B1A #1AA038

square

#1A3FA0 #A01A82 #A07B1A #1AA038

split-complementary

#1A3FA0 #A0381A #82A01A

monochromatic

#091637 #112A6B #1A3FA0 #2354D5 #527AE3

Accessibility & contrast

On white

9.28

#1A3FA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1A3FA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3FA0

9.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3FA0	#FFFFFF	#000000	##FFFFFF
##1A3FA0	1.00	9.28	2.26	9.28
#FFFFFF	9.28	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA3

Deuteranopia (green-blind)

#00419E

Tritanopia (blue-blind)

#005869

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1a3fa0;
/* rgb */ color: rgb(26, 63, 160);
/* oklch */ color: oklch(40.7% 0.163 264.3);

Tailwind

colors: {
  custom: {
    50: '#7073bd',
    500: '#1a3fa0',
    950: '#000000',
  },
}

SCSS

$custom: #1a3fa0;
$custom-light: #7073bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3fa0",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 160
  },
  "hsl": {
    "h": 223.433,
    "s": 72.043,
    "l": 36.471
  },
  "oklch": {
    "l": 0.40735,
    "c": 0.16302,
    "h": 264.3
  },
  "luminance": 0.06313
}

Semantic roles & 50–950 ramp

primary

#1A3FA0

secondary

#C5A550

accent

#BD39EF

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1A3FA0

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

Preview Lab → · Contrast checker → · Palette generator →