#1B556E#1B556E

#1B556E is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.4% C 0.072 H 230.6°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#1B556E
RGB	rgb(27, 85, 110)
HSL	hsl(198, 61%, 27%)
HSV	hsv(198, 75%, 43%)
CMYK	cmyk(75.5%, 22.7%, 0%, 56.9%)
CIE-LAB	lab(33.68, -9.52, -19.71)
CIE-LCH	lch(33.68, 21.89, 244.22°)
OKLab	oklab(42.42% -0.0455 -0.0553)
OKLCH	oklch(42.42% 0.072 230.6)
XYZ	xyz(6.5138, 7.8551, 15.9217)
Luminance	0.0786 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B556E #6E341B

analogous

#1B6E5E #1B556E #1B2C6E

triadic

#1B556E #6E1B55 #556E1B

tetradic

#1B556E #5E1B6E #6E341B #2C6E1B

square

#1B556E #5E1B6E #6E341B #2C6E1B

split-complementary

#1B556E #6E1B2C #6E5E1B

monochromatic

#061319 #0F2F3D #1B556E #277B9F #36A0CE

Accessibility & contrast

On white

8.17

#1B556E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1B556E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B556E

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B556E	#FFFFFF	#000000	##FFFFFF
##1B556E	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48546F

Deuteranopia (green-blind)

#3D4C6E

Tritanopia (blue-blind)

#005C5D

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b556e;
/* rgb */ color: rgb(27, 85, 110);
/* oklch */ color: oklch(42.4% 0.072 230.6);

Tailwind

colors: {
  custom: {
    50: '#648497',
    500: '#1b556e',
    950: '#000000',
  },
}

SCSS

$custom: #1b556e;
$custom-light: #648497;
$custom-dark: #000000;

JSON

{
  "hex": "#1b556e",
  "rgb": {
    "r": 27,
    "g": 85,
    "b": 110
  },
  "hsl": {
    "h": 198.072,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.42417,
    "c": 0.07163,
    "h": 230.6
  },
  "luminance": 0.07856
}

Semantic roles & 50–950 ramp

primary

#1B556E

secondary

#A35F42

accent

#7444E4

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #1B556E

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

Preview Lab → · Contrast checker → · Palette generator →