#155A7D#155A7D

#155A7D is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.4% C 0.087 H 236.4°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#155A7D
RGB	rgb(21, 90, 125)
HSL	hsl(200, 71%, 29%)
HSV	hsv(200, 83%, 49%)
CMYK	cmyk(83.2%, 28%, 0%, 51%)
CIE-LAB	lab(35.89, -7.64, -25.57)
CIE-LCH	lch(35.89, 26.69, 253.36°)
OKLab	oklab(44.37% -0.048 -0.0723)
OKLCH	oklch(44.37% 0.087 236.4)
XYZ	xyz(7.6656, 8.9515, 20.7219)
Luminance	0.0895 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155A7D #7D3815

analogous

#157D6C #155A7D #15267D

triadic

#155A7D #7D155A #5A7D15

tetradic

#155A7D #6C157D #7D3815 #267D15

square

#155A7D #6C157D #7D3815 #267D15

split-complementary

#155A7D #7D1526 #7D6C15

monochromatic

#04131A #0C3449 #155A7D #1E80B1 #30A2DC

Accessibility & contrast

On white

7.53

#155A7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#155A7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155A7D

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155A7D	#FFFFFF	#000000	##FFFFFF
##155A7D	1.00	7.53	2.79	7.53
#FFFFFF	7.53	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495A7F

Deuteranopia (green-blind)

#3B507C

Tritanopia (blue-blind)

#006366

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #155a7d;
/* rgb */ color: rgb(21, 90, 125);
/* oklch */ color: oklch(44.4% 0.087 236.4);

Tailwind

colors: {
  custom: {
    50: '#6588a3',
    500: '#155a7d',
    950: '#000000',
  },
}

SCSS

$custom: #155a7d;
$custom-light: #6588a3;
$custom-dark: #000000;

JSON

{
  "hex": "#155a7d",
  "rgb": {
    "r": 21,
    "g": 90,
    "b": 125
  },
  "hsl": {
    "h": 200.192,
    "s": 71.233,
    "l": 28.627
  },
  "oklch": {
    "l": 0.44373,
    "c": 0.08675,
    "h": 236.4
  },
  "luminance": 0.08952
}

Semantic roles & 50–950 ramp

primary

#155A7D

secondary

#B2643C

accent

#763AEE

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #155A7D

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

Preview Lab → · Contrast checker → · Palette generator →