#155D9E#155D9E

#155D9E is a mid, vivid cyan. Relative luminance 0.105; OKLCH L 47.1% C 0.125 H 251.0°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#155D9E
RGB	rgb(21, 93, 158)
HSL	hsl(208, 77%, 35%)
HSV	hsv(208, 87%, 62%)
CMYK	cmyk(86.7%, 41.1%, 0%, 38%)
CIE-LAB	lab(38.65, 3.54, -41.22)
CIE-LCH	lch(38.65, 41.37, 274.91°)
OKLab	oklab(47.14% -0.0407 -0.1179)
OKLCH	oklch(47.14% 0.125 251)
XYZ	xyz(10.3928, 10.4554, 33.8115)
Luminance	0.1046 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155D9E #9E5615

analogous

#159E9A #155D9E #15199E

triadic

#155D9E #9E155D #5D9E15

tetradic

#155D9E #9A159E #9E5615 #199E15

square

#155D9E #9A159E #9E5615 #199E15

split-complementary

#155D9E #9E1519 #9E9A15

monochromatic

#071D32 #0E3D68 #155D9E #1C7DD4 #479BE7

Accessibility & contrast

On white

6.79

#155D9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#155D9E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #155D9E

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155D9E	#FFFFFF	#000000	##FFFFFF
##155D9E	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D62A1

Deuteranopia (green-blind)

#26559D

Tritanopia (blue-blind)

#006D76

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #155d9e;
/* rgb */ color: rgb(21, 93, 158);
/* oklch */ color: oklch(47.1% 0.125 251.0);

Tailwind

colors: {
  custom: {
    50: '#6d8abb',
    500: '#155d9e',
    950: '#000000',
  },
}

SCSS

$custom: #155d9e;
$custom-light: #6d8abb;
$custom-dark: #000000;

JSON

{
  "hex": "#155d9e",
  "rgb": {
    "r": 21,
    "g": 93,
    "b": 158
  },
  "hsl": {
    "h": 208.467,
    "s": 76.536,
    "l": 35.098
  },
  "oklch": {
    "l": 0.47137,
    "c": 0.12477,
    "h": 251
  },
  "luminance": 0.10457
}

Semantic roles & 50–950 ramp

primary

#155D9E

secondary

#C78447

accent

#8F35F3

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #155D9E

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

Preview Lab → · Contrast checker → · Palette generator →