#1B4B7A#1B4B7A

#1B4B7A is a dark, moderate cyan. Relative luminance 0.067; OKLCH L 40.5% C 0.094 H 251.0°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B7A
RGB	rgb(27, 75, 122)
HSL	hsl(210, 64%, 29%)
HSV	hsv(210, 78%, 48%)
CMYK	cmyk(77.9%, 38.5%, 0%, 52.2%)
CIE-LAB	lab(31.04, 1.49, -31.34)
CIE-LCH	lch(31.04, 31.38, 272.71°)
OKLab	oklab(40.54% -0.0308 -0.0893)
OKLCH	oklch(40.54% 0.094 251)
XYZ	xyz(6.4796, 6.6696, 19.3544)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B7A #7A4A1B

analogous

#1B7A7A #1B4B7A #1B1C7A

triadic

#1B4B7A #7A1B4B #4B7A1B

tetradic

#1B4B7A #7A1B7A #7A4A1B #1C7A1B

square

#1B4B7A #7A1B7A #7A4A1B #1C7A1B

split-complementary

#1B4B7A #7A1B1C #7A7A1B

monochromatic

#060F19 #102C48 #1B4B7A #266AAC #3C89D4

Accessibility & contrast

On white

9.00

#1B4B7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1B4B7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B7A

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B7A	#FFFFFF	#000000	##FFFFFF
##1B4B7A	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#354E7C

Deuteranopia (green-blind)

#274579

Tritanopia (blue-blind)

#00565C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4b7a;
/* rgb */ color: rgb(27, 75, 122);
/* oklch */ color: oklch(40.5% 0.094 251.0);

Tailwind

colors: {
  custom: {
    50: '#667ca1',
    500: '#1b4b7a',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b7a;
$custom-light: #667ca1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b7a",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 122
  },
  "hsl": {
    "h": 209.684,
    "s": 63.758,
    "l": 29.216
  },
  "oklch": {
    "l": 0.40536,
    "c": 0.09444,
    "h": 251
  },
  "luminance": 0.0667
}

Semantic roles & 50–950 ramp

primary

#1B4B7A

secondary

#AE7843

accent

#9341E7

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090F

muted

#7A7B7E

Preview Lab

Preview with #1B4B7A

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

Preview Lab → · Contrast checker → · Palette generator →