#1B505F#1B505F

#1B505F is a dark, moderate cyan. Relative luminance 0.068; OKLCH L 40.3% C 0.060 H 220.0°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#1B505F
RGB	rgb(27, 80, 95)
HSL	hsl(193, 56%, 24%)
HSV	hsv(193, 72%, 37%)
CMYK	cmyk(71.6%, 15.8%, 0%, 62.7%)
CIE-LAB	lab(31.34, -12.00, -13.88)
CIE-LCH	lch(31.34, 18.35, 229.15°)
OKLab	oklab(40.33% -0.0461 -0.0387)
OKLCH	oklch(40.33% 0.06 220)
XYZ	xyz(5.3854, 6.7960, 11.8522)
Luminance	0.0680 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B505F #5F2A1B

analogous

#1B5F4C #1B505F #1B2E5F

triadic

#1B505F #5F1B50 #505F1B

tetradic

#1B505F #4C1B5F #5F2A1B #2E5F1B

square

#1B505F #4C1B5F #5F2A1B #2E5F1B

split-complementary

#1B505F #5F1B2E #5F4C1B

monochromatic

#071418 #0D282F #1B505F #29788F #36A0BE

Accessibility & contrast

On white

8.90

#1B505F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#1B505F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B505F

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B505F	#FFFFFF	#000000	##FFFFFF
##1B505F	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#474E60

Deuteranopia (green-blind)

#3D475F

Tritanopia (blue-blind)

#005555

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b505f;
/* rgb */ color: rgb(27, 80, 95);
/* oklch */ color: oklch(40.3% 0.060 220.0);

Tailwind

colors: {
  custom: {
    50: '#61818c',
    500: '#1b505f',
    950: '#000000',
  },
}

SCSS

$custom: #1b505f;
$custom-light: #61818c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b505f",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 95
  },
  "hsl": {
    "h": 193.235,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.40325,
    "c": 0.06017,
    "h": 220
  },
  "luminance": 0.06797
}

Semantic roles & 50–950 ramp

primary

#1B505F

secondary

#955441

accent

#6A49DF

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#050A0C

muted

#7A7C7D

Preview Lab

Preview with #1B505F

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

Preview Lab → · Contrast checker → · Palette generator →