#155D7B#155D7B

#155D7B is a mid, moderate cyan. Relative luminance 0.094; OKLCH L 45.0% C 0.083 H 231.3°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#155D7B
RGB	rgb(21, 93, 123)
HSL	hsl(198, 71%, 28%)
HSV	hsv(198, 83%, 48%)
CMYK	cmyk(82.9%, 24.4%, 0%, 51.8%)
CIE-LAB	lab(36.78, -10.22, -22.97)
CIE-LCH	lch(36.78, 25.14, 246.00°)
OKLab	oklab(45.05% -0.0517 -0.0647)
OKLCH	oklch(45.05% 0.083 231.3)
XYZ	xyz(7.7973, 9.4172, 20.1418)
Luminance	0.0942 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155D7B #7B3315

analogous

#157B66 #155D7B #152A7B

triadic

#155D7B #7B155D #5D7B15

tetradic

#155D7B #66157B #7B3315 #2A7B15

square

#155D7B #66157B #7B3315 #2A7B15

split-complementary

#155D7B #7B152A #7B6615

monochromatic

#04141A #0C3547 #155D7B #1E85AF #2FA9DB

Accessibility & contrast

On white

7.28

#155D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#155D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155D7B

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155D7B	#FFFFFF	#000000	##FFFFFF
##155D7B	1.00	7.28	2.88	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E5C7C

Deuteranopia (green-blind)

#40527B

Tritanopia (blue-blind)

#006567

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #155d7b;
/* rgb */ color: rgb(21, 93, 123);
/* oklch */ color: oklch(45.0% 0.083 231.3);

Tailwind

colors: {
  custom: {
    50: '#658aa1',
    500: '#155d7b',
    950: '#000000',
  },
}

SCSS

$custom: #155d7b;
$custom-light: #658aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#155d7b",
  "rgb": {
    "r": 21,
    "g": 93,
    "b": 123
  },
  "hsl": {
    "h": 197.647,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.45046,
    "c": 0.08284,
    "h": 231.3
  },
  "luminance": 0.09418
}

Semantic roles & 50–950 ramp

primary

#155D7B

secondary

#B05E3B

accent

#6F3AEE

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060B0F

muted

#7A7C7E

Preview Lab

Preview with #155D7B

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

Preview Lab → · Contrast checker → · Palette generator →