#1B4A7A#1B4A7A

#1B4A7A is a dark, moderate cyan. Relative luminance 0.065; OKLCH L 40.3% C 0.096 H 251.8°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#1B4A7A
RGB	rgb(27, 74, 122)
HSL	hsl(210, 64%, 29%)
HSV	hsv(210, 78%, 48%)
CMYK	cmyk(77.9%, 39.3%, 0%, 52.2%)
CIE-LAB	lab(30.72, 2.15, -31.85)
CIE-LCH	lch(30.72, 31.92, 273.86°)
OKLab	oklab(40.29% -0.0298 -0.0908)
OKLCH	oklch(40.29% 0.096 251.8)
XYZ	xyz(6.4123, 6.5350, 19.3320)
Luminance	0.0654 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4A7A #7A4B1B

analogous

#1B7A7A #1B4A7A #1C1B7A

triadic

#1B4A7A #7A1B4A #4A7A1B

tetradic

#1B4A7A #7A1B7A #7A4B1B #1B7A1C

square

#1B4A7A #7A1B7A #7A4B1B #1B7A1C

split-complementary

#1B4A7A #7A1C1B #7A7A1B

monochromatic

#060F19 #102C48 #1B4A7A #2668AC #3C87D4

Accessibility & contrast

On white

9.10

#1B4A7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1B4A7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4A7A

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4A7A	#FFFFFF	#000000	##FFFFFF
##1B4A7A	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#344D7C

Deuteranopia (green-blind)

#254479

Tritanopia (blue-blind)

#00555C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4a7a;
/* rgb */ color: rgb(27, 74, 122);
/* oklch */ color: oklch(40.3% 0.096 251.8);

Tailwind

colors: {
  custom: {
    50: '#667ca1',
    500: '#1b4a7a',
    950: '#000000',
  },
}

SCSS

$custom: #1b4a7a;
$custom-light: #667ca1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4a7a",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 122
  },
  "hsl": {
    "h": 210.316,
    "s": 63.758,
    "l": 29.216
  },
  "oklch": {
    "l": 0.40287,
    "c": 0.09554,
    "h": 251.8
  },
  "luminance": 0.06536
}

Semantic roles & 50–950 ramp

primary

#1B4A7A

secondary

#AE7943

accent

#9541E7

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090F

muted

#7A7B7E

Preview Lab

Preview with #1B4A7A

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

Preview Lab → · Contrast checker → · Palette generator →