#153D5B#153D5B

#153D5B is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.8% C 0.069 H 244.5°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#153D5B
RGB	rgb(21, 61, 91)
HSL	hsl(206, 63%, 22%)
HSV	hsv(206, 77%, 36%)
CMYK	cmyk(76.9%, 33%, 0%, 64.3%)
CIE-LAB	lab(24.49, -2.57, -21.95)
CIE-LCH	lch(24.49, 22.10, 263.33°)
OKLab	oklab(34.75% -0.0296 -0.0621)
OKLCH	oklch(34.75% 0.069 244.5)
XYZ	xyz(3.8656, 4.2518, 10.5125)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153D5B #5B3315

analogous

#155B56 #153D5B #151A5B

triadic

#153D5B #5B153D #3D5B15

tetradic

#153D5B #56155B #5B3315 #1A5B15

square

#153D5B #56155B #5B3315 #1A5B15

split-complementary

#153D5B #5B151A #5B5615

monochromatic

#061119 #0A1C29 #153D5B #205E8D #2C80BE

Accessibility & contrast

On white

11.35

#153D5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#153D5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153D5B

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153D5B	#FFFFFF	#000000	##FFFFFF
##153D5B	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3E5C

Deuteranopia (green-blind)

#26375A

Tritanopia (blue-blind)

#004448

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #153d5b;
/* rgb */ color: rgb(21, 61, 91);
/* oklch */ color: oklch(34.8% 0.069 244.5);

Tailwind

colors: {
  custom: {
    50: '#5d7289',
    500: '#153d5b',
    950: '#000000',
  },
}

SCSS

$custom: #153d5b;
$custom-light: #5d7289;
$custom-dark: #000000;

JSON

{
  "hex": "#153d5b",
  "rgb": {
    "r": 21,
    "g": 61,
    "b": 91
  },
  "hsl": {
    "h": 205.714,
    "s": 62.5,
    "l": 21.961
  },
  "oklch": {
    "l": 0.34751,
    "c": 0.06881,
    "h": 244.5
  },
  "luminance": 0.04252
}

Semantic roles & 50–950 ramp

primary

#153D5B

secondary

#926039

accent

#8842E6

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #153D5B

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

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