#1B4B82#1B4B82

#1B4B82 is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 41.1% C 0.106 H 254.2°. Best body text is #FFFFFF at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B82
RGB	rgb(27, 75, 130)
HSL	hsl(212, 66%, 31%)
HSV	hsv(212, 79%, 51%)
CMYK	cmyk(79.2%, 42.3%, 0%, 49%)
CIE-LAB	lab(31.52, 4.70, -35.55)
CIE-LCH	lch(31.52, 35.86, 277.53°)
OKLab	oklab(41.07% -0.0287 -0.1016)
OKLCH	oklch(41.07% 0.106 254.2)
XYZ	xyz(6.9958, 6.8761, 22.0733)
Luminance	0.0688 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B82 #82521B

analogous

#1B7E82 #1B4B82 #1F1B82

triadic

#1B4B82 #821B4B #4B821B

tetradic

#1B4B82 #821B7E #82521B #1B821F

square

#1B4B82 #821B7E #82521B #1B821F

split-complementary

#1B4B82 #821F1B #7E821B

monochromatic

#06111D #102E4F #1B4B82 #2668B5 #4087D7

Accessibility & contrast

On white

8.84

#1B4B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1B4B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B82

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B82	#FFFFFF	#000000	##FFFFFF
##1B4B82	1.00	8.84	2.38	8.84
#FFFFFF	8.84	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304F84

Deuteranopia (green-blind)

#1F4681

Tritanopia (blue-blind)

#005860

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4b82;
/* rgb */ color: rgb(27, 75, 130);
/* oklch */ color: oklch(41.1% 0.106 254.2);

Tailwind

colors: {
  custom: {
    50: '#687ca7',
    500: '#1b4b82',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b82;
$custom-light: #687ca7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b82",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 130
  },
  "hsl": {
    "h": 212.039,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.41067,
    "c": 0.1056,
    "h": 254.2
  },
  "luminance": 0.06877
}

Semantic roles & 50–950 ramp

primary

#1B4B82

secondary

#B68043

accent

#9A3FE9

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4B82

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

Preview Lab → · Contrast checker → · Palette generator →