#1B438C#1B438C

#1B438C is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.9% C 0.130 H 261.2°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B438C
RGB	rgb(27, 67, 140)
HSL	hsl(219, 68%, 33%)
HSV	hsv(219, 81%, 55%)
CMYK	cmyk(80.7%, 52.1%, 0%, 45.1%)
CIE-LAB	lab(29.76, 14.22, -44.56)
CIE-LCH	lch(29.76, 46.77, 287.70°)
OKLab	oklab(39.93% -0.0199 -0.1283)
OKLCH	oklch(39.93% 0.13 261.2)
XYZ	xyz(7.1911, 6.1399, 25.6120)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B438C #8C641B

analogous

#1B7B8C #1B438C #2B1B8C

triadic

#1B438C #8C1B43 #438C1B

tetradic

#1B438C #8C1B7B #8C641B #1B8C2B

square

#1B438C #8C1B7B #8C641B #1B8C2B

split-complementary

#1B438C #8C2B1B #7B8C1B

monochromatic

#071225 #112A59 #1B438C #255CBF #467BDB

Accessibility & contrast

On white

9.42

#1B438C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1B438C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B438C

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B438C	#FFFFFF	#000000	##FFFFFF
##1B438C	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144C8F

Deuteranopia (green-blind)

#00418B

Tritanopia (blue-blind)

#005561

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b438c;
/* rgb */ color: rgb(27, 67, 140);
/* oklch */ color: oklch(39.9% 0.130 261.2);

Tailwind

colors: {
  custom: {
    50: '#6a76ae',
    500: '#1b438c',
    950: '#000000',
  },
}

SCSS

$custom: #1b438c;
$custom-light: #6a76ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b438c",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 140
  },
  "hsl": {
    "h": 218.761,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.39926,
    "c": 0.1298,
    "h": 261.2
  },
  "luminance": 0.06141
}

Semantic roles & 50–950 ramp

primary

#1B438C

secondary

#BD9346

accent

#AD3DEB

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1B438C

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

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