#1A3F8D#1A3F8D

#1A3F8D is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.1% C 0.137 H 262.7°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F8D
RGB	rgb(26, 63, 141)
HSL	hsl(221, 69%, 33%)
HSV	hsv(221, 82%, 55%)
CMYK	cmyk(81.6%, 55.3%, 0%, 44.7%)
CIE-LAB	lab(28.63, 17.29, -47.00)
CIE-LCH	lch(28.63, 50.08, 290.19°)
OKLab	oklab(39.08% -0.0174 -0.1356)
OKLCH	oklch(39.08% 0.137 262.7)
XYZ	xyz(7.0095, 5.6969, 25.9243)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F8D #8D681A

analogous

#1A788D #1A3F8D #2F1A8D

triadic

#1A3F8D #8D1A3F #3F8D1A

tetradic

#1A3F8D #8D1A78 #8D681A #1A8D2F

square

#1A3F8D #8D1A78 #8D681A #1A8D2F

split-complementary

#1A3F8D #8D2F1A #788D1A

monochromatic

#071126 #102859 #1A3F8D #2456C1 #4576DD

Accessibility & contrast

On white

9.81

#1A3F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1A3F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F8D

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F8D	#FFFFFF	#000000	##FFFFFF
##1A3F8D	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004990

Deuteranopia (green-blind)

#003F8B

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1a3f8d;
/* rgb */ color: rgb(26, 63, 141);
/* oklch */ color: oklch(39.1% 0.137 262.7);

Tailwind

colors: {
  custom: {
    50: '#6b73af',
    500: '#1a3f8d',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f8d;
$custom-light: #6b73af;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f8d",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 141
  },
  "hsl": {
    "h": 220.696,
    "s": 68.862,
    "l": 32.745
  },
  "oklch": {
    "l": 0.39082,
    "c": 0.13667,
    "h": 262.7
  },
  "luminance": 0.05698
}

Semantic roles & 50–950 ramp

primary

#1A3F8D

secondary

#BE9745

accent

#B33CEC

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1A3F8D

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

Preview Lab → · Contrast checker → · Palette generator →