#1B556D#1B556D

#1B556D is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.4% C 0.071 H 229.5°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#1B556D
RGB	rgb(27, 85, 109)
HSL	hsl(198, 60%, 27%)
HSV	hsv(198, 75%, 43%)
CMYK	cmyk(75.2%, 22%, 0%, 57.3%)
CIE-LAB	lab(33.63, -9.89, -19.16)
CIE-LCH	lch(33.63, 21.56, 242.69°)
OKLab	oklab(42.37% -0.0459 -0.0538)
OKLCH	oklch(42.37% 0.071 229.5)
XYZ	xyz(6.4597, 7.8334, 15.6366)
Luminance	0.0783 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B556D #6D331B

analogous

#1B6D5C #1B556D #1B2C6D

triadic

#1B556D #6D1B55 #556D1B

tetradic

#1B556D #5C1B6D #6D331B #2C6D1B

square

#1B556D #5C1B6D #6D331B #2C6D1B

split-complementary

#1B556D #6D1B2C #6D5C1B

monochromatic

#061319 #0F2F3C #1B556D #277B9E #35A1CD

Accessibility & contrast

On white

8.18

#1B556D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1B556D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B556D

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B556D	#FFFFFF	#000000	##FFFFFF
##1B556D	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49546E

Deuteranopia (green-blind)

#3D4C6D

Tritanopia (blue-blind)

#005C5D

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b556d;
/* rgb */ color: rgb(27, 85, 109);
/* oklch */ color: oklch(42.4% 0.071 229.5);

Tailwind

colors: {
  custom: {
    50: '#648497',
    500: '#1b556d',
    950: '#000000',
  },
}

SCSS

$custom: #1b556d;
$custom-light: #648497;
$custom-dark: #000000;

JSON

{
  "hex": "#1b556d",
  "rgb": {
    "r": 27,
    "g": 85,
    "b": 109
  },
  "hsl": {
    "h": 197.561,
    "s": 60.294,
    "l": 26.667
  },
  "oklch": {
    "l": 0.42366,
    "c": 0.07066,
    "h": 229.5
  },
  "luminance": 0.07834
}

Semantic roles & 50–950 ramp

primary

#1B556D

secondary

#A25E42

accent

#7344E3

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #1B556D

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

Preview Lab → · Contrast checker → · Palette generator →