#1B576F#1B576F

#1B576F is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.0% C 0.072 H 228.8°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B576F
RGB	rgb(27, 87, 111)
HSL	hsl(197, 61%, 27%)
HSV	hsv(197, 76%, 44%)
CMYK	cmyk(75.7%, 21.6%, 0%, 56.5%)
CIE-LAB	lab(34.39, -10.36, -19.24)
CIE-LCH	lch(34.39, 21.85, 241.71°)
OKLab	oklab(43% -0.0473 -0.054)
OKLCH	oklch(43% 0.072 228.8)
XYZ	xyz(6.7283, 8.1963, 16.2633)
Luminance	0.0820 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B576F #6F331B

analogous

#1B6F5D #1B576F #1B2D6F

triadic

#1B576F #6F1B57 #576F1B

tetradic

#1B576F #5D1B6F #6F331B #2D6F1B

square

#1B576F #5D1B6F #6F331B #2D6F1B

split-complementary

#1B576F #6F1B2D #6F5D1B

monochromatic

#061319 #0F303E #1B576F #277EA0 #36A3CE

Accessibility & contrast

On white

7.96

#1B576F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#1B576F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B576F

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B576F	#FFFFFF	#000000	##FFFFFF
##1B576F	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B5670

Deuteranopia (green-blind)

#3F4D6F

Tritanopia (blue-blind)

#005E5F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b576f;
/* rgb */ color: rgb(27, 87, 111);
/* oklch */ color: oklch(43.0% 0.072 228.8);

Tailwind

colors: {
  custom: {
    50: '#648698',
    500: '#1b576f',
    950: '#000000',
  },
}

SCSS

$custom: #1b576f;
$custom-light: #648698;
$custom-dark: #000000;

JSON

{
  "hex": "#1b576f",
  "rgb": {
    "r": 27,
    "g": 87,
    "b": 111
  },
  "hsl": {
    "h": 197.143,
    "s": 60.87,
    "l": 27.059
  },
  "oklch": {
    "l": 0.42999,
    "c": 0.07174,
    "h": 228.8
  },
  "luminance": 0.08197
}

Semantic roles & 50–950 ramp

primary

#1B576F

secondary

#A45E42

accent

#7244E4

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #1B576F

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

Preview Lab → · Contrast checker → · Palette generator →