#1A3D8B#1A3D8B

#1A3D8B is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.5% C 0.136 H 263.2°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#1A3D8B
RGB	rgb(26, 61, 139)
HSL	hsl(221, 68%, 32%)
HSV	hsv(221, 81%, 55%)
CMYK	cmyk(81.3%, 56.1%, 0%, 45.5%)
CIE-LAB	lab(27.90, 17.87, -46.96)
CIE-LCH	lch(27.90, 50.24, 290.83°)
OKLab	oklab(38.48% -0.0161 -0.1355)
OKLCH	oklch(38.48% 0.136 263.2)
XYZ	xyz(6.7533, 5.4204, 25.1114)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3D8B #8B681A

analogous

#1A768B #1A3D8B #301A8B

triadic

#1A3D8B #8B1A3D #3D8B1A

tetradic

#1A3D8B #8B1A76 #8B681A #1A8B30

square

#1A3D8B #8B1A76 #8B681A #1A8B30

split-complementary

#1A3D8B #8B301A #768B1A

monochromatic

#071024 #102657 #1A3D8B #2454BF #4373DC

Accessibility & contrast

On white

10.08

#1A3D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#1A3D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3D8B

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3D8B	#FFFFFF	#000000	##FFFFFF
##1A3D8B	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478E

Deuteranopia (green-blind)

#003D89

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1a3d8b;
/* rgb */ color: rgb(26, 61, 139);
/* oklch */ color: oklch(38.5% 0.136 263.2);

Tailwind

colors: {
  custom: {
    50: '#6a71ad',
    500: '#1a3d8b',
    950: '#000000',
  },
}

SCSS

$custom: #1a3d8b;
$custom-light: #6a71ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3d8b",
  "rgb": {
    "r": 26,
    "g": 61,
    "b": 139
  },
  "hsl": {
    "h": 221.416,
    "s": 68.485,
    "l": 32.353
  },
  "oklch": {
    "l": 0.38477,
    "c": 0.13642,
    "h": 263.2
  },
  "luminance": 0.05421
}

Semantic roles & 50–950 ramp

primary

#1A3D8B

secondary

#BD9744

accent

#B53CEB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1A3D8B

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

Preview Lab → · Contrast checker → · Palette generator →