#1A3D79#1A3D79

#1A3D79 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.110 H 260.4°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).

Color values

HEX	#1A3D79
RGB	rgb(26, 61, 121)
HSL	hsl(218, 65%, 29%)
HSV	hsv(218, 79%, 47%)
CMYK	cmyk(78.5%, 49.6%, 0%, 52.5%)
CIE-LAB	lab(26.55, 10.49, -37.89)
CIE-LCH	lch(26.55, 39.32, 285.48°)
OKLab	oklab(37.02% -0.0184 -0.1088)
OKLCH	oklch(37.02% 0.11 260.4)
XYZ	xyz(5.5447, 4.9369, 18.7462)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3D79 #79561A

analogous

#1A6D79 #1A3D79 #271A79

triadic

#1A3D79 #791A3D #3D791A

tetradic

#1A3D79 #791A6D #79561A #1A7927

square

#1A3D79 #791A6D #79561A #1A7927

split-complementary

#1A3D79 #79271A #6D791A

monochromatic

#050D19 #0F2447 #1A3D79 #2556AB #3972D4

Accessibility & contrast

On white

10.57

#1A3D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#1A3D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3D79

10.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3D79	#FFFFFF	#000000	##FFFFFF
##1A3D79	1.00	10.57	1.99	10.57
#FFFFFF	10.57	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C437B

Deuteranopia (green-blind)

#013B78

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1a3d79;
/* rgb */ color: rgb(26, 61, 121);
/* oklch */ color: oklch(37.0% 0.110 260.4);

Tailwind

colors: {
  custom: {
    50: '#6672a0',
    500: '#1a3d79',
    950: '#000000',
  },
}

SCSS

$custom: #1a3d79;
$custom-light: #6672a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3d79",
  "rgb": {
    "r": 26,
    "g": 61,
    "b": 121
  },
  "hsl": {
    "h": 217.895,
    "s": 64.626,
    "l": 28.824
  },
  "oklch": {
    "l": 0.37023,
    "c": 0.11033,
    "h": 260.4
  },
  "luminance": 0.04938
}

Semantic roles & 50–950 ramp

primary

#1A3D79

secondary

#AD8641

accent

#AA40E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070F

muted

#7A7A7E

Preview Lab

Preview with #1A3D79

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

Preview Lab → · Contrast checker → · Palette generator →