#1B4B87#1B4B87

#1B4B87 is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.4% C 0.113 H 255.8°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B87
RGB	rgb(27, 75, 135)
HSL	hsl(213, 67%, 32%)
HSV	hsv(213, 80%, 53%)
CMYK	cmyk(80%, 44.4%, 0%, 47.1%)
CIE-LAB	lab(31.84, 6.72, -38.14)
CIE-LCH	lch(31.84, 38.73, 280.00°)
OKLab	oklab(41.41% -0.0276 -0.1092)
OKLCH	oklch(41.41% 0.113 255.8)
XYZ	xyz(7.3396, 7.0136, 23.8839)
Luminance	0.0701 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B87 #87571B

analogous

#1B8187 #1B4B87 #211B87

triadic

#1B4B87 #871B4B #4B871B

tetradic

#1B4B87 #871B81 #87571B #1B8721

square

#1B4B87 #871B81 #87571B #1B8721

split-complementary

#1B4B87 #87211B #81871B

monochromatic

#071221 #112F54 #1B4B87 #2567BA #4386D9

Accessibility & contrast

On white

8.74

#1B4B87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1B4B87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B87

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B87	#FFFFFF	#000000	##FFFFFF
##1B4B87	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D5089

Deuteranopia (green-blind)

#184686

Tritanopia (blue-blind)

#005962

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4b87;
/* rgb */ color: rgb(27, 75, 135);
/* oklch */ color: oklch(41.4% 0.113 255.8);

Tailwind

colors: {
  custom: {
    50: '#697caa',
    500: '#1b4b87',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b87;
$custom-light: #697caa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b87",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 135
  },
  "hsl": {
    "h": 213.333,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.41414,
    "c": 0.11264,
    "h": 255.8
  },
  "luminance": 0.07014
}

Semantic roles & 50–950 ramp

primary

#1B4B87

secondary

#BA8544

accent

#9D3EEA

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B4B87

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

Preview Lab → · Contrast checker → · Palette generator →