#1B5E71#1B5E71

#1B5E71 is a dark, moderate cyan. Relative luminance 0.094; OKLCH L 45.0% C 0.072 H 220.9°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#1B5E71
RGB	rgb(27, 94, 113)
HSL	hsl(193, 61%, 27%)
HSV	hsv(193, 76%, 44%)
CMYK	cmyk(76.1%, 16.8%, 0%, 55.7%)
CIE-LAB	lab(36.80, -13.75, -16.76)
CIE-LCH	lch(36.80, 21.68, 230.63°)
OKLab	oklab(44.96% -0.0541 -0.0468)
OKLCH	oklch(44.96% 0.072 220.9)
XYZ	xyz(7.4341, 9.4298, 17.0479)
Luminance	0.0943 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5E71 #712E1B

analogous

#1B7159 #1B5E71 #1B3371

triadic

#1B5E71 #711B5E #5E711B

tetradic

#1B5E71 #591B71 #712E1B #33711B

square

#1B5E71 #591B71 #712E1B #33711B

split-complementary

#1B5E71 #711B33 #71591B

monochromatic

#061519 #0F3540 #1B5E71 #2787A2 #37AECF

Accessibility & contrast

On white

7.28

#1B5E71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#1B5E71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5E71

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5E71	#FFFFFF	#000000	##FFFFFF
##1B5E71	1.00	7.28	2.89	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#535B72

Deuteranopia (green-blind)

#475371

Tritanopia (blue-blind)

#006464

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1b5e71;
/* rgb */ color: rgb(27, 94, 113);
/* oklch */ color: oklch(45.0% 0.072 220.9);

Tailwind

colors: {
  custom: {
    50: '#658b99',
    500: '#1b5e71',
    950: '#000000',
  },
}

SCSS

$custom: #1b5e71;
$custom-light: #658b99;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5e71",
  "rgb": {
    "r": 27,
    "g": 94,
    "b": 113
  },
  "hsl": {
    "h": 193.256,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.44958,
    "c": 0.07157,
    "h": 220.9
  },
  "luminance": 0.09431
}

Semantic roles & 50–950 ramp

primary

#1B5E71

secondary

#A65842

accent

#6743E5

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060C0E

muted

#7A7D7E

Preview Lab

Preview with #1B5E71

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

Preview Lab → · Contrast checker → · Palette generator →