#155F7B#155F7B

#155F7B is a mid, moderate cyan. Relative luminance 0.098; OKLCH L 45.6% C 0.082 H 228.9°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#155F7B
RGB	rgb(21, 95, 123)
HSL	hsl(196, 71%, 28%)
HSV	hsv(196, 83%, 48%)
CMYK	cmyk(82.9%, 22.8%, 0%, 51.8%)
CIE-LAB	lab(37.43, -11.41, -21.95)
CIE-LCH	lch(37.43, 24.74, 242.52°)
OKLab	oklab(45.57% -0.0538 -0.0617)
OKLCH	oklch(45.57% 0.082 228.9)
XYZ	xyz(7.9752, 9.7729, 20.2011)
Luminance	0.0977 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155F7B #7B3115

analogous

#157B64 #155F7B #152C7B

triadic

#155F7B #7B155F #5F7B15

tetradic

#155F7B #64157B #7B3115 #2C7B15

square

#155F7B #64157B #7B3115 #2C7B15

split-complementary

#155F7B #7B152C #7B6415

monochromatic

#04141A #0C3747 #155F7B #1E87AF #2FACDB

Accessibility & contrast

On white

7.11

#155F7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#155F7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155F7B

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155F7B	#FFFFFF	#000000	##FFFFFF
##155F7B	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#505D7C

Deuteranopia (green-blind)

#43547B

Tritanopia (blue-blind)

#006768

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #155f7b;
/* rgb */ color: rgb(21, 95, 123);
/* oklch */ color: oklch(45.6% 0.082 228.9);

Tailwind

colors: {
  custom: {
    50: '#658ca1',
    500: '#155f7b',
    950: '#000000',
  },
}

SCSS

$custom: #155f7b;
$custom-light: #658ca1;
$custom-dark: #000000;

JSON

{
  "hex": "#155f7b",
  "rgb": {
    "r": 21,
    "g": 95,
    "b": 123
  },
  "hsl": {
    "h": 196.471,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.45571,
    "c": 0.08187,
    "h": 228.9
  },
  "luminance": 0.09774
}

Semantic roles & 50–950 ramp

primary

#155F7B

secondary

#B05C3B

accent

#6B3AEE

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070C0F

muted

#7A7D7E

Preview Lab

Preview with #155F7B

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

Preview Lab → · Contrast checker → · Palette generator →