#155B8D#155B8D

#155B8D is a mid, moderate cyan. Relative luminance 0.096; OKLCH L 45.6% C 0.105 H 245.4°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#155B8D
RGB	rgb(21, 91, 141)
HSL	hsl(205, 74%, 32%)
HSV	hsv(205, 85%, 55%)
CMYK	cmyk(85.1%, 35.5%, 0%, 44.7%)
CIE-LAB	lab(37.05, -1.98, -33.52)
CIE-LCH	lch(37.05, 33.58, 266.63°)
OKLab	oklab(45.56% -0.0436 -0.0954)
OKLCH	oklch(45.56% 0.105 245.4)
XYZ	xyz(8.8562, 9.5636, 26.5733)
Luminance	0.0956 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155B8D #8D4715

analogous

#158D83 #155B8D #151F8D

triadic

#155B8D #8D155B #5B8D15

tetradic

#155B8D #83158D #8D4715 #1F8D15

square

#155B8D #83158D #8D4715 #1F8D15

split-complementary

#155B8D #8D151F #8D8315

monochromatic

#051622 #0D3958 #155B8D #1D7DC2 #3B9CE2

Accessibility & contrast

On white

7.21

#155B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#155B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155B8D

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155B8D	#FFFFFF	#000000	##FFFFFF
##155B8D	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#435D8F

Deuteranopia (green-blind)

#32528C

Tritanopia (blue-blind)

#00676D

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #155b8d;
/* rgb */ color: rgb(21, 91, 141);
/* oklch */ color: oklch(45.6% 0.105 245.4);

Tailwind

colors: {
  custom: {
    50: '#6989ae',
    500: '#155b8d',
    950: '#000000',
  },
}

SCSS

$custom: #155b8d;
$custom-light: #6989ae;
$custom-dark: #000000;

JSON

{
  "hex": "#155b8d",
  "rgb": {
    "r": 21,
    "g": 91,
    "b": 141
  },
  "hsl": {
    "h": 205,
    "s": 74.074,
    "l": 31.765
  },
  "oklch": {
    "l": 0.45563,
    "c": 0.10492,
    "h": 245.4
  },
  "luminance": 0.09565
}

Semantic roles & 50–950 ramp

primary

#155B8D

secondary

#C1743D

accent

#8437F1

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #155B8D

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

Preview Lab → · Contrast checker → · Palette generator →