#155E80#155E80

#155E80 is a mid, moderate cyan. Relative luminance 0.097; OKLCH L 45.6% C 0.087 H 234.4°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#155E80
RGB	rgb(21, 94, 128)
HSL	hsl(199, 72%, 29%)
HSV	hsv(199, 84%, 50%)
CMYK	cmyk(83.6%, 26.6%, 0%, 49.8%)
CIE-LAB	lab(37.34, -8.92, -25.15)
CIE-LCH	lch(37.34, 26.68, 250.48°)
OKLab	oklab(45.57% -0.0509 -0.071)
OKLCH	oklch(45.57% 0.087 234.4)
XYZ	xyz(8.2067, 9.7223, 21.8620)
Luminance	0.0972 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155E80 #803715

analogous

#15806D #155E80 #152980

triadic

#155E80 #80155E #5E8015

tetradic

#155E80 #6D1580 #803715 #298015

square

#155E80 #6D1580 #803715 #298015

split-complementary

#155E80 #801529 #806D15

monochromatic

#04131A #0C374B #155E80 #1E85B5 #32A7DD

Accessibility & contrast

On white

7.13

#155E80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#155E80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155E80

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155E80	#FFFFFF	#000000	##FFFFFF
##155E80	1.00	7.13	2.94	7.13
#FFFFFF	7.13	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D5D82

Deuteranopia (green-blind)

#3F547F

Tritanopia (blue-blind)

#00676A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #155e80;
/* rgb */ color: rgb(21, 94, 128);
/* oklch */ color: oklch(45.6% 0.087 234.4);

Tailwind

colors: {
  custom: {
    50: '#668ba5',
    500: '#155e80',
    950: '#000000',
  },
}

SCSS

$custom: #155e80;
$custom-light: #668ba5;
$custom-dark: #000000;

JSON

{
  "hex": "#155e80",
  "rgb": {
    "r": 21,
    "g": 94,
    "b": 128
  },
  "hsl": {
    "h": 199.065,
    "s": 71.812,
    "l": 29.216
  },
  "oklch": {
    "l": 0.45574,
    "c": 0.08734,
    "h": 234.4
  },
  "luminance": 0.09723
}

Semantic roles & 50–950 ramp

primary

#155E80

secondary

#B5623C

accent

#7339EF

background

#F6F8FA

surface

#EBF0F4

border

#C6CBCE

text

#070C0F

muted

#7A7D7F

Preview Lab

Preview with #155E80

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

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