#1B4687#1B4687

#1B4687 is a dark, moderate blue. Relative luminance 0.064; OKLCH L 40.2% C 0.119 H 258.8°. Best body text is #FFFFFF at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#1B4687
RGB	rgb(27, 70, 135)
HSL	hsl(216, 67%, 32%)
HSV	hsv(216, 80%, 53%)
CMYK	cmyk(80%, 48.1%, 0%, 47.1%)
CIE-LAB	lab(30.31, 10.12, -40.59)
CIE-LCH	lch(30.31, 41.84, 284.00°)
OKLab	oklab(40.23% -0.0231 -0.1165)
OKLCH	oklch(40.23% 0.119 258.8)
XYZ	xyz(7.0137, 6.3618, 23.7753)
Luminance	0.0636 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4687 #875C1B

analogous

#1B7C87 #1B4687 #261B87

triadic

#1B4687 #871B46 #46871B

tetradic

#1B4687 #871B7C #875C1B #1B8726

square

#1B4687 #871B7C #875C1B #1B8726

split-complementary

#1B4687 #87261B #7C871B

monochromatic

#071121 #112C54 #1B4687 #2560BA #437FD9

Accessibility & contrast

On white

9.24

#1B4687 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#1B4687 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4687

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4687	#FFFFFF	#000000	##FFFFFF
##1B4687	1.00	9.24	2.27	9.24
#FFFFFF	9.24	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234D89

Deuteranopia (green-blind)

#054386

Tritanopia (blue-blind)

#005560

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b4687;
/* rgb */ color: rgb(27, 70, 135);
/* oklch */ color: oklch(40.2% 0.119 258.8);

Tailwind

colors: {
  custom: {
    50: '#6978aa',
    500: '#1b4687',
    950: '#000000',
  },
}

SCSS

$custom: #1b4687;
$custom-light: #6978aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4687",
  "rgb": {
    "r": 27,
    "g": 70,
    "b": 135
  },
  "hsl": {
    "h": 216.111,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.40231,
    "c": 0.11882,
    "h": 258.8
  },
  "luminance": 0.06363
}

Semantic roles & 50–950 ramp

primary

#1B4687

secondary

#BA8B44

accent

#A53EEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B4687

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

Preview Lab → · Contrast checker → · Palette generator →