#1B4C82#1B4C82

#1B4C82 is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.3% C 0.104 H 253.5°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#1B4C82
RGB	rgb(27, 76, 130)
HSL	hsl(211, 66%, 31%)
HSV	hsv(211, 79%, 51%)
CMYK	cmyk(79.2%, 41.5%, 0%, 49%)
CIE-LAB	lab(31.84, 4.03, -35.05)
CIE-LCH	lch(31.84, 35.29, 276.56°)
OKLab	oklab(41.31% -0.0296 -0.1001)
OKLCH	oklch(41.31% 0.104 253.5)
XYZ	xyz(7.0642, 7.0128, 22.0961)
Luminance	0.0701 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4C82 #82511B

analogous

#1B7F82 #1B4C82 #1D1B82

triadic

#1B4C82 #821B4C #4C821B

tetradic

#1B4C82 #821B7F #82511B #1B821D

square

#1B4C82 #821B7F #82511B #1B821D

split-complementary

#1B4C82 #821D1B #7F821B

monochromatic

#06111D #102E4F #1B4C82 #266AB5 #4088D7

Accessibility & contrast

On white

8.74

#1B4C82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1B4C82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4C82

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4C82	#FFFFFF	#000000	##FFFFFF
##1B4C82	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)

#325084

Deuteranopia (green-blind)

#214781

Tritanopia (blue-blind)

#005960

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4c82;
/* rgb */ color: rgb(27, 76, 130);
/* oklch */ color: oklch(41.3% 0.104 253.5);

Tailwind

colors: {
  custom: {
    50: '#687da6',
    500: '#1b4c82',
    950: '#000000',
  },
}

SCSS

$custom: #1b4c82;
$custom-light: #687da6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4c82",
  "rgb": {
    "r": 27,
    "g": 76,
    "b": 130
  },
  "hsl": {
    "h": 211.456,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.41311,
    "c": 0.10443,
    "h": 253.5
  },
  "luminance": 0.07014
}

Semantic roles & 50–950 ramp

primary

#1B4C82

secondary

#B67F43

accent

#983FE9

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4C82

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

Preview Lab → · Contrast checker → · Palette generator →