#1B497B#1B497B

#1B497B is a dark, moderate cyan. Relative luminance 0.064; OKLCH L 40.1% C 0.098 H 253.1°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#1B497B
RGB	rgb(27, 73, 123)
HSL	hsl(211, 64%, 29%)
HSV	hsv(211, 78%, 48%)
CMYK	cmyk(78%, 40.7%, 0%, 51.8%)
CIE-LAB	lab(30.47, 3.22, -32.89)
CIE-LCH	lch(30.47, 33.04, 275.59°)
OKLab	oklab(40.11% -0.0285 -0.0938)
OKLCH	oklch(40.11% 0.098 253.1)
XYZ	xyz(6.4084, 6.4274, 19.6379)
Luminance	0.0643 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B497B #7B4D1B

analogous

#1B797B #1B497B #1D1B7B

triadic

#1B497B #7B1B49 #497B1B

tetradic

#1B497B #7B1B79 #7B4D1B #1B7B1D

square

#1B497B #7B1B79 #7B4D1B #1B7B1D

split-complementary

#1B497B #7B1D1B #797B1B

monochromatic

#060F19 #102B49 #1B497B #2667AD #3C85D4

Accessibility & contrast

On white

9.19

#1B497B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1B497B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B497B

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B497B	#FFFFFF	#000000	##FFFFFF
##1B497B	1.00	9.19	2.29	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314D7D

Deuteranopia (green-blind)

#22447A

Tritanopia (blue-blind)

#00555C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b497b;
/* rgb */ color: rgb(27, 73, 123);
/* oklch */ color: oklch(40.1% 0.098 253.1);

Tailwind

colors: {
  custom: {
    50: '#667ba1',
    500: '#1b497b',
    950: '#000000',
  },
}

SCSS

$custom: #1b497b;
$custom-light: #667ba1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b497b",
  "rgb": {
    "r": 27,
    "g": 73,
    "b": 123
  },
  "hsl": {
    "h": 211.25,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.40105,
    "c": 0.09808,
    "h": 253.1
  },
  "luminance": 0.06428
}

Semantic roles & 50–950 ramp

primary

#1B497B

secondary

#AF7B43

accent

#9741E7

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#07090F

muted

#7A7B7E

Preview Lab

Preview with #1B497B

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

Preview Lab → · Contrast checker → · Palette generator →