#155A7B#155A7B

#155A7B is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.3% C 0.085 H 234.8°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#155A7B
RGB	rgb(21, 90, 123)
HSL	hsl(199, 71%, 28%)
HSV	hsv(199, 83%, 48%)
CMYK	cmyk(82.9%, 26.8%, 0%, 51.8%)
CIE-LAB	lab(35.79, -8.41, -24.50)
CIE-LCH	lch(35.79, 25.90, 251.04°)
OKLab	oklab(44.26% -0.0487 -0.0691)
OKLCH	oklch(44.26% 0.085 234.8)
XYZ	xyz(7.5391, 8.9009, 20.0557)
Luminance	0.0890 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155A7B #7B3615

analogous

#157B69 #155A7B #15277B

triadic

#155A7B #7B155A #5A7B15

tetradic

#155A7B #69157B #7B3615 #277B15

square

#155A7B #69157B #7B3615 #277B15

split-complementary

#155A7B #7B1527 #7B6915

monochromatic

#04131A #0C3447 #155A7B #1E80AF #2FA4DB

Accessibility & contrast

On white

7.55

#155A7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#155A7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155A7B

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155A7B	#FFFFFF	#000000	##FFFFFF
##155A7B	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A597D

Deuteranopia (green-blind)

#3C507A

Tritanopia (blue-blind)

#006365

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #155a7b;
/* rgb */ color: rgb(21, 90, 123);
/* oklch */ color: oklch(44.3% 0.085 234.8);

Tailwind

colors: {
  custom: {
    50: '#6588a1',
    500: '#155a7b',
    950: '#000000',
  },
}

SCSS

$custom: #155a7b;
$custom-light: #6588a1;
$custom-dark: #000000;

JSON

{
  "hex": "#155a7b",
  "rgb": {
    "r": 21,
    "g": 90,
    "b": 123
  },
  "hsl": {
    "h": 199.412,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.44263,
    "c": 0.08458,
    "h": 234.8
  },
  "luminance": 0.08902
}

Semantic roles & 50–950 ramp

primary

#155A7B

secondary

#B0613B

accent

#743AEE

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0F

muted

#7A7C7E

Preview Lab

Preview with #155A7B

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

Preview Lab → · Contrast checker → · Palette generator →