#1A3F8B#1A3F8B

#1A3F8B is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.9% C 0.134 H 262.5°. Best body text is #FFFFFF at 9.87:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F8B
RGB	rgb(26, 63, 139)
HSL	hsl(220, 68%, 32%)
HSV	hsv(220, 81%, 55%)
CMYK	cmyk(81.3%, 54.7%, 0%, 45.5%)
CIE-LAB	lab(28.48, 16.47, -46.02)
CIE-LCH	lch(28.48, 48.88, 289.70°)
OKLab	oklab(38.92% -0.0176 -0.1327)
OKLCH	oklch(38.92% 0.134 262.5)
XYZ	xyz(6.8620, 5.6379, 25.1477)
Luminance	0.0564 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F8B #8B661A

analogous

#1A788B #1A3F8B #2E1A8B

triadic

#1A3F8B #8B1A3F #3F8B1A

tetradic

#1A3F8B #8B1A78 #8B661A #1A8B2E

square

#1A3F8B #8B1A78 #8B661A #1A8B2E

split-complementary

#1A3F8B #8B2E1A #788B1A

monochromatic

#071024 #102857 #1A3F8B #2456BF #4375DC

Accessibility & contrast

On white

9.87

#1A3F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1A3F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F8B

9.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F8B	#FFFFFF	#000000	##FFFFFF
##1A3F8B	1.00	9.87	2.13	9.87
#FFFFFF	9.87	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03498E

Deuteranopia (green-blind)

#003E8A

Tritanopia (blue-blind)

#00525E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1a3f8b;
/* rgb */ color: rgb(26, 63, 139);
/* oklch */ color: oklch(38.9% 0.134 262.5);

Tailwind

colors: {
  custom: {
    50: '#6a73ad',
    500: '#1a3f8b',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f8b;
$custom-light: #6a73ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f8b",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 139
  },
  "hsl": {
    "h": 220.354,
    "s": 68.485,
    "l": 32.353
  },
  "oklch": {
    "l": 0.38916,
    "c": 0.13382,
    "h": 262.5
  },
  "luminance": 0.05639
}

Semantic roles & 50–950 ramp

primary

#1A3F8B

secondary

#BD9544

accent

#B23CEB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1A3F8B

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

Preview Lab → · Contrast checker → · Palette generator →