#153B4B#153B4B

#153B4B is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.3% C 0.051 H 228.9°. Best body text is #FFFFFF at 11.94:1 contrast (WCAG AA passes).

Color values

HEX	#153B4B
RGB	rgb(21, 59, 75)
HSL	hsl(198, 56%, 19%)
HSV	hsv(198, 72%, 29%)
CMYK	cmyk(72%, 21.3%, 0%, 70.6%)
CIE-LAB	lab(22.98, -7.54, -13.75)
CIE-LCH	lch(22.98, 15.68, 241.25°)
OKLab	oklab(33.29% -0.0335 -0.0384)
OKLCH	oklch(33.29% 0.051 228.9)
XYZ	xyz(3.1427, 3.7950, 7.2221)
Luminance	0.0379 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B4B #4B2515

analogous

#154B40 #153B4B #15204B

triadic

#153B4B #4B153B #3B4B15

tetradic

#153B4B #40154B #4B2515 #204B15

square

#153B4B #40154B #4B2515 #204B15

split-complementary

#153B4B #4B1520 #4B4015

monochromatic

#071318 #08151B #153B4B #22617B #3086AB

Accessibility & contrast

On white

11.94

#153B4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#153B4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B4B

11.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B4B	#FFFFFF	#000000	##FFFFFF
##153B4B	1.00	11.94	1.76	11.94
#FFFFFF	11.94	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333A4C

Deuteranopia (green-blind)

#2B344B

Tritanopia (blue-blind)

#004040

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #153b4b;
/* rgb */ color: rgb(21, 59, 75);
/* oklch */ color: oklch(33.3% 0.051 228.9);

Tailwind

colors: {
  custom: {
    50: '#5a707d',
    500: '#153b4b',
    950: '#000000',
  },
}

SCSS

$custom: #153b4b;
$custom-light: #5a707d;
$custom-dark: #000000;

JSON

{
  "hex": "#153b4b",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 75
  },
  "hsl": {
    "h": 197.778,
    "s": 56.25,
    "l": 18.824
  },
  "oklch": {
    "l": 0.33288,
    "c": 0.05101,
    "h": 228.9
  },
  "luminance": 0.03795
}

Semantic roles & 50–950 ramp

primary

#153B4B

secondary

#834F39

accent

#7548E0

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #153B4B

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

Preview Lab → · Contrast checker → · Palette generator →