#155A8D#155A8D

#155A8D is a mid, moderate cyan. Relative luminance 0.094; OKLCH L 45.3% C 0.106 H 246.2°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#155A8D
RGB	rgb(21, 90, 141)
HSL	hsl(206, 74%, 32%)
HSV	hsv(206, 85%, 55%)
CMYK	cmyk(85.1%, 36.2%, 0%, 44.7%)
CIE-LAB	lab(36.73, -1.34, -34.02)
CIE-LCH	lch(36.73, 34.05, 267.74°)
OKLab	oklab(45.31% -0.0427 -0.0969)
OKLCH	oklch(45.31% 0.106 246.2)
XYZ	xyz(8.7713, 9.3937, 26.5450)
Luminance	0.0940 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155A8D #8D4815

analogous

#158D84 #155A8D #151E8D

triadic

#155A8D #8D155A #5A8D15

tetradic

#155A8D #84158D #8D4815 #1E8D15

square

#155A8D #84158D #8D4815 #1E8D15

split-complementary

#155A8D #8D151E #8D8415

monochromatic

#051622 #0D3858 #155A8D #1D7CC2 #3B9BE2

Accessibility & contrast

On white

7.29

#155A8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#155A8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155A8D

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155A8D	#FFFFFF	#000000	##FFFFFF
##155A8D	1.00	7.29	2.88	7.29
#FFFFFF	7.29	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#425C8F

Deuteranopia (green-blind)

#30528C

Tritanopia (blue-blind)

#00666D

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #155a8d;
/* rgb */ color: rgb(21, 90, 141);
/* oklch */ color: oklch(45.3% 0.106 246.2);

Tailwind

colors: {
  custom: {
    50: '#6988ae',
    500: '#155a8d',
    950: '#000000',
  },
}

SCSS

$custom: #155a8d;
$custom-light: #6988ae;
$custom-dark: #000000;

JSON

{
  "hex": "#155a8d",
  "rgb": {
    "r": 21,
    "g": 90,
    "b": 141
  },
  "hsl": {
    "h": 205.5,
    "s": 74.074,
    "l": 31.765
  },
  "oklch": {
    "l": 0.45314,
    "c": 0.10591,
    "h": 246.2
  },
  "luminance": 0.09395
}

Semantic roles & 50–950 ramp

primary

#155A8D

secondary

#C1753D

accent

#8637F1

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #155A8D

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

Preview Lab → · Contrast checker → · Palette generator →