#1B4E60#1B4E60

#1B4E60 is a dark, moderate cyan. Relative luminance 0.065; OKLCH L 39.8% C 0.061 H 225.0°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E60
RGB	rgb(27, 78, 96)
HSL	hsl(196, 56%, 24%)
HSV	hsv(196, 72%, 38%)
CMYK	cmyk(71.9%, 18.7%, 0%, 62.4%)
CIE-LAB	lab(30.70, -10.44, -15.49)
CIE-LCH	lch(30.70, 18.68, 236.03°)
OKLab	oklab(39.83% -0.0433 -0.0433)
OKLCH	oklch(39.83% 0.061 225)
XYZ	xyz(5.2869, 6.5257, 12.0450)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E60 #602D1B

analogous

#1B6050 #1B4E60 #1B2C60

triadic

#1B4E60 #601B4E #4E601B

tetradic

#1B4E60 #501B60 #602D1B #2C601B

square

#1B4E60 #501B60 #602D1B #2C601B

split-complementary

#1B4E60 #601B2C #60501B

monochromatic

#071318 #0E2730 #1B4E60 #287590 #369CC0

Accessibility & contrast

On white

9.11

#1B4E60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1B4E60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E60

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E60	#FFFFFF	#000000	##FFFFFF
##1B4E60	1.00	9.11	2.31	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#444C61

Deuteranopia (green-blind)

#3A4560

Tritanopia (blue-blind)

#005354

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4e60;
/* rgb */ color: rgb(27, 78, 96);
/* oklch */ color: oklch(39.8% 0.061 225.0);

Tailwind

colors: {
  custom: {
    50: '#617f8d',
    500: '#1b4e60',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e60;
$custom-light: #617f8d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e60",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 96
  },
  "hsl": {
    "h": 195.652,
    "s": 56.098,
    "l": 24.118
  },
  "oklch": {
    "l": 0.3983,
    "c": 0.06122,
    "h": 225
  },
  "luminance": 0.06526
}

Semantic roles & 50–950 ramp

primary

#1B4E60

secondary

#965741

accent

#7048DF

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#050A0C

muted

#7A7C7D

Preview Lab

Preview with #1B4E60

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

Preview Lab → · Contrast checker → · Palette generator →