#1A3D8A#1A3D8A

#1A3D8A is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.4% C 0.135 H 263.1°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#1A3D8A
RGB	rgb(26, 61, 138)
HSL	hsl(221, 68%, 32%)
HSV	hsv(221, 81%, 54%)
CMYK	cmyk(81.2%, 55.8%, 0%, 45.9%)
CIE-LAB	lab(27.82, 17.46, -46.47)
CIE-LCH	lch(27.82, 49.64, 290.59°)
OKLab	oklab(38.39% -0.0161 -0.134)
OKLCH	oklch(38.39% 0.135 263.1)
XYZ	xyz(6.6805, 5.3913, 24.7284)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3D8A #8A671A

analogous

#1A758A #1A3D8A #2F1A8A

triadic

#1A3D8A #8A1A3D #3D8A1A

tetradic

#1A3D8A #8A1A75 #8A671A #1A8A2F

square

#1A3D8A #8A1A75 #8A671A #1A8A2F

split-complementary

#1A3D8A #8A2F1A #758A1A

monochromatic

#070F23 #102657 #1A3D8A #2454BD #4373DC

Accessibility & contrast

On white

10.10

#1A3D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#1A3D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3D8A

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3D8A	#FFFFFF	#000000	##FFFFFF
##1A3D8A	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478D

Deuteranopia (green-blind)

#003D88

Tritanopia (blue-blind)

#00505D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1a3d8a;
/* rgb */ color: rgb(26, 61, 138);
/* oklch */ color: oklch(38.4% 0.135 263.1);

Tailwind

colors: {
  custom: {
    50: '#6a71ad',
    500: '#1a3d8a',
    950: '#000000',
  },
}

SCSS

$custom: #1a3d8a;
$custom-light: #6a71ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3d8a",
  "rgb": {
    "r": 26,
    "g": 61,
    "b": 138
  },
  "hsl": {
    "h": 221.25,
    "s": 68.293,
    "l": 32.157
  },
  "oklch": {
    "l": 0.38392,
    "c": 0.13499,
    "h": 263.1
  },
  "luminance": 0.05392
}

Semantic roles & 50–950 ramp

primary

#1A3D8A

secondary

#BD9743

accent

#B53DEB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1A3D8A

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

Preview Lab → · Contrast checker → · Palette generator →