#1B515F#1B515F

#1B515F is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 40.6% C 0.060 H 218.2°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#1B515F
RGB	rgb(27, 81, 95)
HSL	hsl(192, 56%, 24%)
HSV	hsv(192, 72%, 37%)
CMYK	cmyk(71.6%, 14.7%, 0%, 62.7%)
CIE-LAB	lab(31.68, -12.59, -13.36)
CIE-LCH	lch(31.68, 18.36, 226.68°)
OKLab	oklab(40.6% -0.0472 -0.0372)
OKLCH	oklch(40.6% 0.06 218.2)
XYZ	xyz(5.4591, 6.9435, 11.8768)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B515F #5F291B

analogous

#1B5F4B #1B515F #1B2F5F

triadic

#1B515F #5F1B51 #515F1B

tetradic

#1B515F #4B1B5F #5F291B #2F5F1B

square

#1B515F #4B1B5F #5F291B #2F5F1B

split-complementary

#1B515F #5F1B2F #5F4B1B

monochromatic

#071418 #0D282F #1B515F #297A8F #36A2BE

Accessibility & contrast

On white

8.79

#1B515F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#1B515F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B515F

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B515F	#FFFFFF	#000000	##FFFFFF
##1B515F	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484F60

Deuteranopia (green-blind)

#3E475F

Tritanopia (blue-blind)

#005655

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b515f;
/* rgb */ color: rgb(27, 81, 95);
/* oklch */ color: oklch(40.6% 0.060 218.2);

Tailwind

colors: {
  custom: {
    50: '#61828c',
    500: '#1b515f',
    950: '#000000',
  },
}

SCSS

$custom: #1b515f;
$custom-light: #61828c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b515f",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 95
  },
  "hsl": {
    "h": 192.353,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.40598,
    "c": 0.06014,
    "h": 218.2
  },
  "luminance": 0.06944
}

Semantic roles & 50–950 ramp

primary

#1B515F

secondary

#955241

accent

#6849DF

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#050A0C

muted

#7A7C7D

Preview Lab

Preview with #1B515F

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

Preview Lab → · Contrast checker → · Palette generator →