#155C9E#155C9E

#155C9E is a mid, vivid cyan. Relative luminance 0.103; OKLCH L 46.9% C 0.126 H 251.5°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#155C9E
RGB	rgb(21, 92, 158)
HSL	hsl(209, 77%, 35%)
HSV	hsv(209, 87%, 62%)
CMYK	cmyk(86.7%, 41.8%, 0%, 38%)
CIE-LAB	lab(38.34, 4.19, -41.70)
CIE-LCH	lch(38.34, 41.91, 275.74°)
OKLab	oklab(46.9% -0.0399 -0.1194)
OKLCH	oklch(46.9% 0.126 251.5)
XYZ	xyz(10.3056, 10.2810, 33.7824)
Luminance	0.1028 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155C9E #9E5715

analogous

#159E9B #155C9E #15189E

triadic

#155C9E #9E155C #5C9E15

tetradic

#155C9E #9B159E #9E5715 #189E15

square

#155C9E #9B159E #9E5715 #189E15

split-complementary

#155C9E #9E1518 #9E9B15

monochromatic

#071D32 #0E3D68 #155C9E #1C7BD4 #479AE7

Accessibility & contrast

On white

6.87

#155C9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#155C9E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #155C9E

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155C9E	#FFFFFF	#000000	##FFFFFF
##155C9E	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B61A1

Deuteranopia (green-blind)

#23559D

Tritanopia (blue-blind)

#006C75

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #155c9e;
/* rgb */ color: rgb(21, 92, 158);
/* oklch */ color: oklch(46.9% 0.126 251.5);

Tailwind

colors: {
  custom: {
    50: '#6d89bb',
    500: '#155c9e',
    950: '#000000',
  },
}

SCSS

$custom: #155c9e;
$custom-light: #6d89bb;
$custom-dark: #000000;

JSON

{
  "hex": "#155c9e",
  "rgb": {
    "r": 21,
    "g": 92,
    "b": 158
  },
  "hsl": {
    "h": 208.905,
    "s": 76.536,
    "l": 35.098
  },
  "oklch": {
    "l": 0.46899,
    "c": 0.12588,
    "h": 251.5
  },
  "luminance": 0.10282
}

Semantic roles & 50–950 ramp

primary

#155C9E

secondary

#C78547

accent

#9035F3

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #155C9E

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

Preview Lab → · Contrast checker → · Palette generator →