#153F4F#153F4F

#153F4F is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.6% C 0.054 H 226.7°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#153F4F
RGB	rgb(21, 63, 79)
HSL	hsl(197, 58%, 20%)
HSV	hsv(197, 73%, 31%)
CMYK	cmyk(73.4%, 20.3%, 0%, 69%)
CIE-LAB	lab(24.57, -8.57, -13.94)
CIE-LCH	lch(24.57, 16.37, 238.42°)
OKLab	oklab(34.62% -0.0367 -0.039)
OKLCH	oklch(34.62% 0.054 226.7)
XYZ	xyz(3.4975, 4.2786, 8.0371)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153F4F #4F2515

analogous

#154F42 #153F4F #15224F

triadic

#153F4F #4F153F #3F4F15

tetradic

#153F4F #42154F #4F2515 #224F15

square

#153F4F #42154F #4F2515 #224F15

split-complementary

#153F4F #4F1522 #4F4215

monochromatic

#061318 #08181F #153F4F #22667F #2F8CB0

Accessibility & contrast

On white

11.32

#153F4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#153F4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153F4F

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153F4F	#FFFFFF	#000000	##FFFFFF
##153F4F	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363E50

Deuteranopia (green-blind)

#2E384F

Tritanopia (blue-blind)

#004444

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #153f4f;
/* rgb */ color: rgb(21, 63, 79);
/* oklch */ color: oklch(34.6% 0.054 226.7);

Tailwind

colors: {
  custom: {
    50: '#5b7480',
    500: '#153f4f',
    950: '#000000',
  },
}

SCSS

$custom: #153f4f;
$custom-light: #5b7480;
$custom-dark: #000000;

JSON

{
  "hex": "#153f4f",
  "rgb": {
    "r": 21,
    "g": 63,
    "b": 79
  },
  "hsl": {
    "h": 196.552,
    "s": 58,
    "l": 19.608
  },
  "oklch": {
    "l": 0.34619,
    "c": 0.05354,
    "h": 226.7
  },
  "luminance": 0.04279
}

Semantic roles & 50–950 ramp

primary

#153F4F

secondary

#874E39

accent

#7147E1

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #153F4F

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

Preview Lab → · Contrast checker → · Palette generator →