#155B7D#155B7D

#155B7D is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 44.6% C 0.086 H 235.3°. Best body text is #FFFFFF at 7.44:1 contrast (WCAG AA passes).

Color values

HEX	#155B7D
RGB	rgb(21, 91, 125)
HSL	hsl(200, 71%, 29%)
HSV	hsv(200, 83%, 49%)
CMYK	cmyk(83.2%, 27.2%, 0%, 51%)
CIE-LAB	lab(36.22, -8.25, -25.06)
CIE-LCH	lch(36.22, 26.39, 251.78°)
OKLab	oklab(44.63% -0.049 -0.0708)
OKLCH	oklch(44.63% 0.086 235.3)
XYZ	xyz(7.7505, 9.1213, 20.7502)
Luminance	0.0912 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155B7D #7D3715

analogous

#157D6B #155B7D #15277D

triadic

#155B7D #7D155B #5B7D15

tetradic

#155B7D #6B157D #7D3715 #277D15

square

#155B7D #6B157D #7D3715 #277D15

split-complementary

#155B7D #7D1527 #7D6B15

monochromatic

#04131A #0C3549 #155B7D #1E81B1 #30A4DC

Accessibility & contrast

On white

7.44

#155B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#155B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155B7D

7.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155B7D	#FFFFFF	#000000	##FFFFFF
##155B7D	1.00	7.44	2.82	7.44
#FFFFFF	7.44	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A5B7F

Deuteranopia (green-blind)

#3D517C

Tritanopia (blue-blind)

#006467

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #155b7d;
/* rgb */ color: rgb(21, 91, 125);
/* oklch */ color: oklch(44.6% 0.086 235.3);

Tailwind

colors: {
  custom: {
    50: '#6589a3',
    500: '#155b7d',
    950: '#000000',
  },
}

SCSS

$custom: #155b7d;
$custom-light: #6589a3;
$custom-dark: #000000;

JSON

{
  "hex": "#155b7d",
  "rgb": {
    "r": 21,
    "g": 91,
    "b": 125
  },
  "hsl": {
    "h": 199.615,
    "s": 71.233,
    "l": 28.627
  },
  "oklch": {
    "l": 0.44632,
    "c": 0.08608,
    "h": 235.3
  },
  "luminance": 0.09122
}

Semantic roles & 50–950 ramp

primary

#155B7D

secondary

#B2623C

accent

#753AEE

background

#F6F8FA

surface

#EBF0F3

border

#C6CBCD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #155B7D

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

Preview Lab → · Contrast checker → · Palette generator →