#1B438D#1B438D

#1B438D is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.0% C 0.131 H 261.4°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B438D
RGB	rgb(27, 67, 141)
HSL	hsl(219, 68%, 33%)
HSV	hsv(219, 81%, 55%)
CMYK	cmyk(80.9%, 52.5%, 0%, 44.7%)
CIE-LAB	lab(29.84, 14.63, -45.05)
CIE-LCH	lch(29.84, 47.37, 287.98°)
OKLab	oklab(40.01% -0.0197 -0.1297)
OKLCH	oklch(40.01% 0.131 261.4)
XYZ	xyz(7.2651, 6.1696, 26.0021)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B438D #8D651B

analogous

#1B7C8D #1B438D #2C1B8D

triadic

#1B438D #8D1B43 #438D1B

tetradic

#1B438D #8D1B7C #8D651B #1B8D2C

square

#1B438D #8D1B7C #8D651B #1B8D2C

split-complementary

#1B438D #8D2C1B #7C8D1B

monochromatic

#071226 #112B5A #1B438D #255BC0 #477BDC

Accessibility & contrast

On white

9.40

#1B438D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1B438D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B438D

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B438D	#FFFFFF	#000000	##FFFFFF
##1B438D	1.00	9.40	2.23	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124C90

Deuteranopia (green-blind)

#00418C

Tritanopia (blue-blind)

#005561

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b438d;
/* rgb */ color: rgb(27, 67, 141);
/* oklch */ color: oklch(40.0% 0.131 261.4);

Tailwind

colors: {
  custom: {
    50: '#6b76af',
    500: '#1b438d',
    950: '#000000',
  },
}

SCSS

$custom: #1b438d;
$custom-light: #6b76af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b438d",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 141
  },
  "hsl": {
    "h": 218.947,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.40006,
    "c": 0.13122,
    "h": 261.4
  },
  "luminance": 0.0617
}

Semantic roles & 50–950 ramp

primary

#1B438D

secondary

#BD9446

accent

#AE3DEB

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1B438D

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

Preview Lab → · Contrast checker → · Palette generator →