#153E5B#153E5B

#153E5B is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.0% C 0.068 H 243.1°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#153E5B
RGB	rgb(21, 62, 91)
HSL	hsl(205, 63%, 22%)
HSV	hsv(205, 77%, 36%)
CMYK	cmyk(76.9%, 31.9%, 0%, 64.3%)
CIE-LAB	lab(24.83, -3.23, -21.41)
CIE-LCH	lch(24.83, 21.66, 261.42°)
OKLab	oklab(35.02% -0.0307 -0.0605)
OKLCH	oklch(35.02% 0.068 243.1)
XYZ	xyz(3.9195, 4.3596, 10.5304)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153E5B #5B3215

analogous

#155B55 #153E5B #151B5B

triadic

#153E5B #5B153E #3E5B15

tetradic

#153E5B #55155B #5B3215 #1B5B15

square

#153E5B #55155B #5B3215 #1B5B15

split-complementary

#153E5B #5B151B #5B5515

monochromatic

#061119 #0A1C29 #153E5B #20608D #2C82BE

Accessibility & contrast

On white

11.22

#153E5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#153E5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153E5B

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153E5B	#FFFFFF	#000000	##FFFFFF
##153E5B	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313F5C

Deuteranopia (green-blind)

#27385A

Tritanopia (blue-blind)

#004548

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #153e5b;
/* rgb */ color: rgb(21, 62, 91);
/* oklch */ color: oklch(35.0% 0.068 243.1);

Tailwind

colors: {
  custom: {
    50: '#5d7389',
    500: '#153e5b',
    950: '#000000',
  },
}

SCSS

$custom: #153e5b;
$custom-light: #5d7389;
$custom-dark: #000000;

JSON

{
  "hex": "#153e5b",
  "rgb": {
    "r": 21,
    "g": 62,
    "b": 91
  },
  "hsl": {
    "h": 204.857,
    "s": 62.5,
    "l": 21.961
  },
  "oklch": {
    "l": 0.35019,
    "c": 0.06791,
    "h": 243.1
  },
  "luminance": 0.0436
}

Semantic roles & 50–950 ramp

primary

#153E5B

secondary

#925E39

accent

#8642E6

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05080B

muted

#797B7C

Preview Lab

Preview with #153E5B

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

Preview Lab → · Contrast checker → · Palette generator →