#1B647B#1B647B

#1B647B is a mid, moderate cyan. Relative luminance 0.108; OKLCH L 47.0% C 0.078 H 223.6°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#1B647B
RGB	rgb(27, 100, 123)
HSL	hsl(194, 64%, 29%)
HSV	hsv(194, 78%, 48%)
CMYK	cmyk(78%, 18.7%, 0%, 51.8%)
CIE-LAB	lab(39.20, -13.62, -19.20)
CIE-LCH	lch(39.20, 23.54, 234.65°)
OKLab	oklab(47.03% -0.0564 -0.0538)
OKLCH	oklch(47.03% 0.078 223.6)
XYZ	xyz(8.5828, 10.7764, 20.3628)
Luminance	0.1078 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B647B #7B321B

analogous

#1B7B62 #1B647B #1B347B

triadic

#1B647B #7B1B64 #647B1B

tetradic

#1B647B #621B7B #7B321B #347B1B

square

#1B647B #621B7B #7B321B #347B1B

split-complementary

#1B647B #7B1B34 #7B621B

monochromatic

#061419 #103B49 #1B647B #268DAD #3CB0D4

Accessibility & contrast

On white

6.66

#1B647B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#1B647B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B647B

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B647B	#FFFFFF	#000000	##FFFFFF
##1B647B	1.00	6.66	3.16	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57627C

Deuteranopia (green-blind)

#4A587B

Tritanopia (blue-blind)

#006B6B

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1b647b;
/* rgb */ color: rgb(27, 100, 123);
/* oklch */ color: oklch(47.0% 0.078 223.6);

Tailwind

colors: {
  custom: {
    50: '#6790a1',
    500: '#1b647b',
    950: '#000000',
  },
}

SCSS

$custom: #1b647b;
$custom-light: #6790a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b647b",
  "rgb": {
    "r": 27,
    "g": 100,
    "b": 123
  },
  "hsl": {
    "h": 194.375,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.47025,
    "c": 0.0779,
    "h": 223.6
  },
  "luminance": 0.10777
}

Semantic roles & 50–950 ramp

primary

#1B647B

secondary

#AF5D43

accent

#6941E7

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070C0F

muted

#7A7D7E

Preview Lab

Preview with #1B647B

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

Preview Lab → · Contrast checker → · Palette generator →