#1B556C#1B556C

#1B556C is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.3% C 0.070 H 228.4°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#1B556C
RGB	rgb(27, 85, 108)
HSL	hsl(197, 60%, 26%)
HSV	hsv(197, 75%, 42%)
CMYK	cmyk(75%, 21.3%, 0%, 57.6%)
CIE-LAB	lab(33.59, -10.26, -18.60)
CIE-LCH	lch(33.59, 21.25, 241.12°)
OKLab	oklab(42.32% -0.0463 -0.0522)
OKLCH	oklch(42.32% 0.07 228.4)
XYZ	xyz(6.4062, 7.8120, 15.3547)
Luminance	0.0781 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B556C #6C321B

analogous

#1B6C5B #1B556C #1B2D6C

triadic

#1B556C #6C1B55 #556C1B

tetradic

#1B556C #5B1B6C #6C321B #2D6C1B

square

#1B556C #5B1B6C #6C321B #2D6C1B

split-complementary

#1B556C #6C1B2D #6C5B1B

monochromatic

#061318 #0F2E3B #1B556C #277C9D #35A1CC

Accessibility & contrast

On white

8.19

#1B556C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#1B556C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B556C

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B556C	#FFFFFF	#000000	##FFFFFF
##1B556C	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49536D

Deuteranopia (green-blind)

#3E4B6C

Tritanopia (blue-blind)

#005C5D

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b556c;
/* rgb */ color: rgb(27, 85, 108);
/* oklch */ color: oklch(42.3% 0.070 228.4);

Tailwind

colors: {
  custom: {
    50: '#648496',
    500: '#1b556c',
    950: '#000000',
  },
}

SCSS

$custom: #1b556c;
$custom-light: #648496;
$custom-dark: #000000;

JSON

{
  "hex": "#1b556c",
  "rgb": {
    "r": 27,
    "g": 85,
    "b": 108
  },
  "hsl": {
    "h": 197.037,
    "s": 60,
    "l": 26.471
  },
  "oklch": {
    "l": 0.42315,
    "c": 0.06973,
    "h": 228.4
  },
  "luminance": 0.07813
}

Semantic roles & 50–950 ramp

primary

#1B556C

secondary

#A15D42

accent

#7245E3

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #1B556C

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

Preview Lab → · Contrast checker → · Palette generator →