#155C7B#155C7B

#155C7B is a dark, moderate cyan. Relative luminance 0.092; OKLCH L 44.8% C 0.083 H 232.5°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#155C7B
RGB	rgb(21, 92, 123)
HSL	hsl(198, 71%, 28%)
HSV	hsv(198, 83%, 48%)
CMYK	cmyk(82.9%, 25.2%, 0%, 51.8%)
CIE-LAB	lab(36.45, -9.62, -23.48)
CIE-LCH	lch(36.45, 25.37, 247.71°)
OKLab	oklab(44.79% -0.0507 -0.0662)
OKLCH	oklch(44.79% 0.083 232.5)
XYZ	xyz(7.7101, 9.2428, 20.1127)
Luminance	0.0924 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155C7B #7B3415

analogous

#157B67 #155C7B #15297B

triadic

#155C7B #7B155C #5C7B15

tetradic

#155C7B #67157B #7B3415 #297B15

square

#155C7B #67157B #7B3415 #297B15

split-complementary

#155C7B #7B1529 #7B6715

monochromatic

#04141A #0C3547 #155C7B #1E83AF #2FA7DB

Accessibility & contrast

On white

7.37

#155C7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#155C7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155C7B

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155C7B	#FFFFFF	#000000	##FFFFFF
##155C7B	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C5B7C

Deuteranopia (green-blind)

#3F527B

Tritanopia (blue-blind)

#006466

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #155c7b;
/* rgb */ color: rgb(21, 92, 123);
/* oklch */ color: oklch(44.8% 0.083 232.5);

Tailwind

colors: {
  custom: {
    50: '#658aa1',
    500: '#155c7b',
    950: '#000000',
  },
}

SCSS

$custom: #155c7b;
$custom-light: #658aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#155c7b",
  "rgb": {
    "r": 21,
    "g": 92,
    "b": 123
  },
  "hsl": {
    "h": 198.235,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.44785,
    "c": 0.08339,
    "h": 232.5
  },
  "luminance": 0.09244
}

Semantic roles & 50–950 ramp

primary

#155C7B

secondary

#B05F3B

accent

#713AEE

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060B0F

muted

#7A7C7E

Preview Lab

Preview with #155C7B

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

Preview Lab → · Contrast checker → · Palette generator →