#1A3DA1#1A3DA1

#1A3DA1 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.167 H 264.8°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#1A3DA1
RGB	rgb(26, 61, 161)
HSL	hsl(224, 72%, 37%)
HSV	hsv(224, 84%, 63%)
CMYK	cmyk(83.9%, 62.1%, 0%, 36.9%)
CIE-LAB	lab(29.74, 26.68, -57.42)
CIE-LCH	lch(29.74, 63.32, 294.92°)
OKLab	oklab(40.43% -0.015 -0.1662)
OKLCH	oklch(40.43% 0.167 264.8)
XYZ	xyz(8.5255, 6.1293, 34.4450)
Luminance	0.0613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3DA1 #A17E1A

analogous

#1A81A1 #1A3DA1 #3A1AA1

triadic

#1A3DA1 #A11A3D #3DA11A

tetradic

#1A3DA1 #A11A81 #A17E1A #1AA13A

square

#1A3DA1 #A11A81 #A17E1A #1AA13A

split-complementary

#1A3DA1 #A13A1A #81A11A

monochromatic

#091538 #11296C #1A3DA1 #2351D6 #5278E3

Accessibility & contrast

On white

9.43

#1A3DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1A3DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3DA1

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3DA1	#FFFFFF	#000000	##FFFFFF
##1A3DA1	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA4

Deuteranopia (green-blind)

#00409F

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1a3da1;
/* rgb */ color: rgb(26, 61, 161);
/* oklch */ color: oklch(40.4% 0.167 264.8);

Tailwind

colors: {
  custom: {
    50: '#7072be',
    500: '#1a3da1',
    950: '#000000',
  },
}

SCSS

$custom: #1a3da1;
$custom-light: #7072be;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3da1",
  "rgb": {
    "r": 26,
    "g": 61,
    "b": 161
  },
  "hsl": {
    "h": 224.444,
    "s": 72.193,
    "l": 36.667
  },
  "oklch": {
    "l": 0.40427,
    "c": 0.16685,
    "h": 264.8
  },
  "luminance": 0.0613
}

Semantic roles & 50–950 ramp

primary

#1A3DA1

secondary

#C6A851

accent

#C039EF

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1A3DA1

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

Preview Lab → · Contrast checker → · Palette generator →