#153B57#153B57

#153B57 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.0% C 0.065 H 243.9°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#153B57
RGB	rgb(21, 59, 87)
HSL	hsl(205, 61%, 21%)
HSV	hsv(205, 76%, 34%)
CMYK	cmyk(75.9%, 32.2%, 0%, 65.9%)
CIE-LAB	lab(23.59, -2.84, -20.74)
CIE-LCH	lch(23.59, 20.93, 262.21°)
OKLab	oklab(33.97% -0.0288 -0.0586)
OKLCH	oklch(33.97% 0.065 243.9)
XYZ	xyz(3.5929, 3.9751, 9.5929)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B57 #573115

analogous

#155752 #153B57 #151A57

triadic

#153B57 #57153B #3B5715

tetradic

#153B57 #521557 #573115 #1A5715

square

#153B57 #521557 #573115 #1A5715

split-complementary

#153B57 #57151A #575215

monochromatic

#061119 #091A26 #153B57 #215C88 #2D7EBA

Accessibility & contrast

On white

11.70

#153B57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#153B57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B57

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B57	#FFFFFF	#000000	##FFFFFF
##153B57	1.00	11.70	1.80	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3C58

Deuteranopia (green-blind)

#253556

Tritanopia (blue-blind)

#004245

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #153b57;
/* rgb */ color: rgb(21, 59, 87);
/* oklch */ color: oklch(34.0% 0.065 243.9);

Tailwind

colors: {
  custom: {
    50: '#5c7086',
    500: '#153b57',
    950: '#000000',
  },
}

SCSS

$custom: #153b57;
$custom-light: #5c7086;
$custom-dark: #000000;

JSON

{
  "hex": "#153b57",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 87
  },
  "hsl": {
    "h": 205.455,
    "s": 61.111,
    "l": 21.176
  },
  "oklch": {
    "l": 0.3397,
    "c": 0.0653,
    "h": 243.9
  },
  "luminance": 0.03975
}

Semantic roles & 50–950 ramp

primary

#153B57

secondary

#8F5D39

accent

#8844E4

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #153B57

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

Preview Lab → · Contrast checker → · Palette generator →