#1B438A#1B438A

#1B438A is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.8% C 0.127 H 260.9°. Best body text is #FFFFFF at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B438A
RGB	rgb(27, 67, 138)
HSL	hsl(218, 67%, 32%)
HSV	hsv(218, 80%, 54%)
CMYK	cmyk(80.4%, 51.4%, 0%, 45.9%)
CIE-LAB	lab(29.62, 13.40, -43.56)
CIE-LCH	lch(29.62, 45.58, 287.10°)
OKLab	oklab(39.77% -0.0201 -0.1253)
OKLCH	oklch(39.77% 0.127 260.9)
XYZ	xyz(7.0449, 6.0815, 24.8424)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B438A #8A621B

analogous

#1B7B8A #1B438A #2A1B8A

triadic

#1B438A #8A1B43 #438A1B

tetradic

#1B438A #8A1B7B #8A621B #1B8A2A

square

#1B438A #8A1B7B #8A621B #1B8A2A

split-complementary

#1B438A #8A2A1B #7B8A1B

monochromatic

#071124 #112A57 #1B438A #255CBD #457BDB

Accessibility & contrast

On white

9.47

#1B438A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1B438A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B438A

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B438A	#FFFFFF	#000000	##FFFFFF
##1B438A	1.00	9.47	2.22	9.47
#FFFFFF	9.47	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174B8D

Deuteranopia (green-blind)

#004189

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b438a;
/* rgb */ color: rgb(27, 67, 138);
/* oklch */ color: oklch(39.8% 0.127 260.9);

Tailwind

colors: {
  custom: {
    50: '#6a76ad',
    500: '#1b438a',
    950: '#000000',
  },
}

SCSS

$custom: #1b438a;
$custom-light: #6a76ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b438a",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 138
  },
  "hsl": {
    "h": 218.378,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.39768,
    "c": 0.12694,
    "h": 260.9
  },
  "luminance": 0.06082
}

Semantic roles & 50–950 ramp

primary

#1B438A

secondary

#BC9145

accent

#AC3EEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1B438A

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

Preview Lab → · Contrast checker → · Palette generator →