#155E9E#155E9E

#155E9E is a mid, vivid cyan. Relative luminance 0.106; OKLCH L 47.4% C 0.124 H 250.4°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#155E9E
RGB	rgb(21, 94, 158)
HSL	hsl(208, 77%, 35%)
HSV	hsv(208, 87%, 62%)
CMYK	cmyk(86.7%, 40.5%, 0%, 38%)
CIE-LAB	lab(38.95, 2.90, -40.73)
CIE-LCH	lch(38.95, 40.83, 274.07°)
OKLab	oklab(47.38% -0.0415 -0.1165)
OKLCH	oklch(47.38% 0.124 250.4)
XYZ	xyz(10.4812, 10.6321, 33.8409)
Luminance	0.1063 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155E9E #9E5515

analogous

#159E99 #155E9E #151A9E

triadic

#155E9E #9E155E #5E9E15

tetradic

#155E9E #99159E #9E5515 #1A9E15

square

#155E9E #99159E #9E5515 #1A9E15

split-complementary

#155E9E #9E151A #9E9915

monochromatic

#071E32 #0E3E68 #155E9E #1C7ED4 #479CE7

Accessibility & contrast

On white

6.72

#155E9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#155E9E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #155E9E

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155E9E	#FFFFFF	#000000	##FFFFFF
##155E9E	1.00	6.72	3.13	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E62A1

Deuteranopia (green-blind)

#28569D

Tritanopia (blue-blind)

#006D76

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #155e9e;
/* rgb */ color: rgb(21, 94, 158);
/* oklch */ color: oklch(47.4% 0.124 250.4);

Tailwind

colors: {
  custom: {
    50: '#6d8bbb',
    500: '#155e9e',
    950: '#000000',
  },
}

SCSS

$custom: #155e9e;
$custom-light: #6d8bbb;
$custom-dark: #000000;

JSON

{
  "hex": "#155e9e",
  "rgb": {
    "r": 21,
    "g": 94,
    "b": 158
  },
  "hsl": {
    "h": 208.029,
    "s": 76.536,
    "l": 35.098
  },
  "oklch": {
    "l": 0.47377,
    "c": 0.12367,
    "h": 250.4
  },
  "luminance": 0.10633
}

Semantic roles & 50–950 ramp

primary

#155E9E

secondary

#C78347

accent

#8E35F3

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #155E9E

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

Preview Lab → · Contrast checker → · Palette generator →