#153D4B#153D4B

#153D4B is a dark, muted cyan. Relative luminance 0.040; OKLCH L 33.9% C 0.050 H 224.5°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#153D4B
RGB	rgb(21, 61, 75)
HSL	hsl(196, 56%, 19%)
HSV	hsv(196, 72%, 29%)
CMYK	cmyk(72%, 18.7%, 0%, 70.6%)
CIE-LAB	lab(23.69, -8.82, -12.66)
CIE-LCH	lch(23.69, 15.43, 235.15°)
OKLab	oklab(33.85% -0.036 -0.0353)
OKLCH	oklch(33.85% 0.05 224.5)
XYZ	xyz(3.2475, 4.0046, 7.2571)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153D4B #4B2315

analogous

#154B3E #153D4B #15224B

triadic

#153D4B #4B153D #3D4B15

tetradic

#153D4B #3E154B #4B2315 #224B15

square

#153D4B #3E154B #4B2315 #224B15

split-complementary

#153D4B #4B1522 #4B3E15

monochromatic

#071318 #08161B #153D4B #22647B #308BAB

Accessibility & contrast

On white

11.66

#153D4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#153D4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153D4B

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153D4B	#FFFFFF	#000000	##FFFFFF
##153D4B	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353C4C

Deuteranopia (green-blind)

#2E364B

Tritanopia (blue-blind)

#004142

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #153d4b;
/* rgb */ color: rgb(21, 61, 75);
/* oklch */ color: oklch(33.9% 0.050 224.5);

Tailwind

colors: {
  custom: {
    50: '#5a727d',
    500: '#153d4b',
    950: '#000000',
  },
}

SCSS

$custom: #153d4b;
$custom-light: #5a727d;
$custom-dark: #000000;

JSON

{
  "hex": "#153d4b",
  "rgb": {
    "r": 21,
    "g": 61,
    "b": 75
  },
  "hsl": {
    "h": 195.556,
    "s": 56.25,
    "l": 18.824
  },
  "oklch": {
    "l": 0.33851,
    "c": 0.05045,
    "h": 224.5
  },
  "luminance": 0.04005
}

Semantic roles & 50–950 ramp

primary

#153D4B

secondary

#834C39

accent

#6F48E0

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #153D4B

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

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