#1A378C#1A378C

#1A378C is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.146 H 265.4°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#1A378C
RGB	rgb(26, 55, 140)
HSL	hsl(225, 69%, 33%)
HSV	hsv(225, 81%, 55%)
CMYK	cmyk(81.4%, 60.7%, 0%, 45.1%)
CIE-LAB	lab(26.29, 22.45, -50.20)
CIE-LCH	lch(26.29, 54.99, 294.09°)
OKLab	oklab(37.29% -0.0118 -0.1451)
OKLCH	oklch(37.29% 0.146 265.4)
XYZ	xyz(6.5241, 4.8447, 25.3971)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A378C #8C6F1A

analogous

#1A708C #1A378C #361A8C

triadic

#1A378C #8C1A37 #378C1A

tetradic

#1A378C #8C1A70 #8C6F1A #1A8C36

square

#1A378C #8C1A70 #8C6F1A #1A8C36

split-complementary

#1A378C #8C361A #708C1A

monochromatic

#070E25 #102358 #1A378C #244BC0 #446BDC

Accessibility & contrast

On white

10.67

#1A378C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1A378C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A378C

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A378C	#FFFFFF	#000000	##FFFFFF
##1A378C	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448F

Deuteranopia (green-blind)

#00398A

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1a378c;
/* rgb */ color: rgb(26, 55, 140);
/* oklch */ color: oklch(37.3% 0.146 265.4);

Tailwind

colors: {
  custom: {
    50: '#6b6dae',
    500: '#1a378c',
    950: '#000000',
  },
}

SCSS

$custom: #1a378c;
$custom-light: #6b6dae;
$custom-dark: #000000;

JSON

{
  "hex": "#1a378c",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 140
  },
  "hsl": {
    "h": 224.737,
    "s": 68.675,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37289,
    "c": 0.14558,
    "h": 265.4
  },
  "luminance": 0.04845
}

Semantic roles & 50–950 ramp

primary

#1A378C

secondary

#BE9F44

accent

#BF3CEC

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1A378C

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

Preview Lab → · Contrast checker → · Palette generator →