#1B4A82#1B4A82

#1B4A82 is a dark, moderate cyan. Relative luminance 0.067; OKLCH L 40.8% C 0.107 H 254.9°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#1B4A82
RGB	rgb(27, 74, 130)
HSL	hsl(213, 66%, 31%)
HSV	hsv(213, 79%, 51%)
CMYK	cmyk(79.2%, 43.1%, 0%, 49%)
CIE-LAB	lab(31.21, 5.37, -36.05)
CIE-LCH	lch(31.21, 36.45, 278.47°)
OKLab	oklab(40.83% -0.0278 -0.1031)
OKLCH	oklch(40.83% 0.107 254.9)
XYZ	xyz(6.9285, 6.7415, 22.0508)
Luminance	0.0674 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4A82 #82531B

analogous

#1B7D82 #1B4A82 #1F1B82

triadic

#1B4A82 #821B4A #4A821B

tetradic

#1B4A82 #821B7D #82531B #1B821F

square

#1B4A82 #821B7D #82531B #1B821F

split-complementary

#1B4A82 #821F1B #7D821B

monochromatic

#06101D #102D4F #1B4A82 #2667B5 #4085D7

Accessibility & contrast

On white

8.94

#1B4A82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1B4A82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4A82

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4A82	#FFFFFF	#000000	##FFFFFF
##1B4A82	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4F84

Deuteranopia (green-blind)

#1D4581

Tritanopia (blue-blind)

#00575F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4a82;
/* rgb */ color: rgb(27, 74, 130);
/* oklch */ color: oklch(40.8% 0.107 254.9);

Tailwind

colors: {
  custom: {
    50: '#687ca7',
    500: '#1b4a82',
    950: '#000000',
  },
}

SCSS

$custom: #1b4a82;
$custom-light: #687ca7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4a82",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 130
  },
  "hsl": {
    "h": 212.621,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.40825,
    "c": 0.10677,
    "h": 254.9
  },
  "luminance": 0.06742
}

Semantic roles & 50–950 ramp

primary

#1B4A82

secondary

#B68143

accent

#9B3FE9

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4A82

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

Preview Lab → · Contrast checker → · Palette generator →