#155A6D#155A6D

#155A6D is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.5% C 0.072 H 220.9°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#155A6D
RGB	rgb(21, 90, 109)
HSL	hsl(193, 68%, 25%)
HSV	hsv(193, 81%, 43%)
CMYK	cmyk(80.7%, 17.4%, 0%, 57.3%)
CIE-LAB	lab(35.15, -13.69, -16.83)
CIE-LCH	lch(35.15, 21.69, 230.87°)
OKLab	oklab(43.54% -0.0543 -0.0471)
OKLCH	oklch(43.54% 0.072 220.9)
XYZ	xyz(6.7246, 8.5751, 15.7658)
Luminance	0.0858 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155A6D #6D2815

analogous

#156D54 #155A6D #152E6D

triadic

#155A6D #6D155A #5A6D15

tetradic

#155A6D #54156D #6D2815 #2E6D15

square

#155A6D #54156D #6D2815 #2E6D15

split-complementary

#155A6D #6D152E #6D5415

monochromatic

#05151A #0B303A #155A6D #1F84A0 #29AFD4

Accessibility & contrast

On white

7.73

#155A6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#155A6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155A6D

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155A6D	#FFFFFF	#000000	##FFFFFF
##155A6D	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F576E

Deuteranopia (green-blind)

#434F6D

Tritanopia (blue-blind)

#006060

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #155a6d;
/* rgb */ color: rgb(21, 90, 109);
/* oklch */ color: oklch(43.5% 0.072 220.9);

Tailwind

colors: {
  custom: {
    50: '#628897',
    500: '#155a6d',
    950: '#000000',
  },
}

SCSS

$custom: #155a6d;
$custom-light: #628897;
$custom-dark: #000000;

JSON

{
  "hex": "#155a6d",
  "rgb": {
    "r": 21,
    "g": 90,
    "b": 109
  },
  "hsl": {
    "h": 192.955,
    "s": 67.692,
    "l": 25.49
  },
  "oklch": {
    "l": 0.43539,
    "c": 0.07189,
    "h": 220.9
  },
  "luminance": 0.08576
}

Semantic roles & 50–950 ramp

primary

#155A6D

secondary

#A3513A

accent

#633DEB

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #155A6D

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

Preview Lab → · Contrast checker → · Palette generator →