#1B4787#1B4787

#1B4787 is a dark, moderate blue. Relative luminance 0.065; OKLCH L 40.5% C 0.118 H 258.2°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B4787
RGB	rgb(27, 71, 135)
HSL	hsl(216, 67%, 32%)
HSV	hsv(216, 80%, 53%)
CMYK	cmyk(80%, 47.4%, 0%, 47.1%)
CIE-LAB	lab(30.61, 9.44, -40.11)
CIE-LCH	lch(30.61, 41.20, 283.24°)
OKLab	oklab(40.47% -0.024 -0.1151)
OKLCH	oklch(40.47% 0.118 258.2)
XYZ	xyz(7.0768, 6.4879, 23.7963)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4787 #875B1B

analogous

#1B7D87 #1B4787 #251B87

triadic

#1B4787 #871B47 #47871B

tetradic

#1B4787 #871B7D #875B1B #1B8725

square

#1B4787 #871B7D #875B1B #1B8725

split-complementary

#1B4787 #87251B #7D871B

monochromatic

#071121 #112C54 #1B4787 #2562BA #4380D9

Accessibility & contrast

On white

9.14

#1B4787 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1B4787 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4787

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4787	#FFFFFF	#000000	##FFFFFF
##1B4787	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254D89

Deuteranopia (green-blind)

#0A4386

Tritanopia (blue-blind)

#005660

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4787;
/* rgb */ color: rgb(27, 71, 135);
/* oklch */ color: oklch(40.5% 0.118 258.2);

Tailwind

colors: {
  custom: {
    50: '#6979aa',
    500: '#1b4787',
    950: '#000000',
  },
}

SCSS

$custom: #1b4787;
$custom-light: #6979aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4787",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 135
  },
  "hsl": {
    "h": 215.556,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.40465,
    "c": 0.11756,
    "h": 258.2
  },
  "luminance": 0.06489
}

Semantic roles & 50–950 ramp

primary

#1B4787

secondary

#BA8A44

accent

#A43EEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B4787

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

Preview Lab → · Contrast checker → · Palette generator →