#1A3F9C#1A3F9C

#1A3F9C is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.4% C 0.158 H 264.1°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F9C
RGB	rgb(26, 63, 156)
HSL	hsl(223, 71%, 36%)
HSV	hsv(223, 83%, 61%)
CMYK	cmyk(83.3%, 59.6%, 0%, 38.8%)
CIE-LAB	lab(29.85, 23.34, -54.21)
CIE-LCH	lch(29.85, 59.02, 293.29°)
OKLab	oklab(40.38% -0.0163 -0.1567)
OKLCH	oklch(40.38% 0.158 264.1)
XYZ	xyz(8.2021, 6.1739, 32.2054)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F9C #9C771A

analogous

#1A809C #1A3F9C #361A9C

triadic

#1A3F9C #9C1A3F #3F9C1A

tetradic

#1A3F9C #9C1A80 #9C771A #1A9C36

square

#1A3F9C #9C1A80 #9C771A #1A9C36

split-complementary

#1A3F9C #9C361A #809C1A

monochromatic

#091533 #112A68 #1A3F9C #2354D0 #4F79E2

Accessibility & contrast

On white

9.40

#1A3F9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1A3F9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F9C

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F9C	#FFFFFF	#000000	##FFFFFF
##1A3F9C	1.00	9.40	2.24	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9F

Deuteranopia (green-blind)

#00419A

Tritanopia (blue-blind)

#005767

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1a3f9c;
/* rgb */ color: rgb(26, 63, 156);
/* oklch */ color: oklch(40.4% 0.158 264.1);

Tailwind

colors: {
  custom: {
    50: '#6f73ba',
    500: '#1a3f9c',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f9c;
$custom-light: #6f73ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f9c",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 156
  },
  "hsl": {
    "h": 222.923,
    "s": 71.429,
    "l": 35.686
  },
  "oklch": {
    "l": 0.40376,
    "c": 0.15758,
    "h": 264.1
  },
  "luminance": 0.06175
}

Semantic roles & 50–950 ramp

primary

#1A3F9C

secondary

#C4A24E

accent

#BB3AEE

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1A3F9C

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

Preview Lab → · Contrast checker → · Palette generator →