#1A378B#1A378B

#1A378B is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.2% C 0.144 H 265.3°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#1A378B
RGB	rgb(26, 55, 139)
HSL	hsl(225, 68%, 32%)
HSV	hsv(225, 81%, 55%)
CMYK	cmyk(81.3%, 60.4%, 0%, 45.5%)
CIE-LAB	lab(26.20, 22.05, -49.72)
CIE-LCH	lch(26.20, 54.39, 293.91°)
OKLab	oklab(37.2% -0.0118 -0.1437)
OKLCH	oklch(37.2% 0.144 265.3)
XYZ	xyz(6.4507, 4.8153, 25.0106)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A378B #8B6E1A

analogous

#1A6F8B #1A378B #361A8B

triadic

#1A378B #8B1A37 #378B1A

tetradic

#1A378B #8B1A6F #8B6E1A #1A8B36

square

#1A378B #8B1A6F #8B6E1A #1A8B36

split-complementary

#1A378B #8B361A #6F8B1A

monochromatic

#070E24 #102357 #1A378B #244BBF #436BDC

Accessibility & contrast

On white

10.70

#1A378B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1A378B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A378B

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A378B	#FFFFFF	#000000	##FFFFFF
##1A378B	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438E

Deuteranopia (green-blind)

#003989

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1a378b;
/* rgb */ color: rgb(26, 55, 139);
/* oklch */ color: oklch(37.2% 0.144 265.3);

Tailwind

colors: {
  custom: {
    50: '#6b6dae',
    500: '#1a378b',
    950: '#000000',
  },
}

SCSS

$custom: #1a378b;
$custom-light: #6b6dae;
$custom-dark: #000000;

JSON

{
  "hex": "#1a378b",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 139
  },
  "hsl": {
    "h": 224.602,
    "s": 68.485,
    "l": 32.353
  },
  "oklch": {
    "l": 0.37199,
    "c": 0.14418,
    "h": 265.3
  },
  "luminance": 0.04816
}

Semantic roles & 50–950 ramp

primary

#1A378B

secondary

#BD9E44

accent

#BE3CEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1A378B

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

Preview Lab → · Contrast checker → · Palette generator →