#155B6A#155B6A

#155B6A is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 43.7% C 0.070 H 215.8°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#155B6A
RGB	rgb(21, 91, 106)
HSL	hsl(191, 67%, 25%)
HSV	hsv(191, 80%, 42%)
CMYK	cmyk(80.2%, 14.2%, 0%, 58.4%)
CIE-LAB	lab(35.36, -15.36, -14.64)
CIE-LCH	lch(35.36, 21.22, 223.63°)
OKLab	oklab(43.67% -0.0567 -0.0409)
OKLCH	oklch(43.67% 0.07 215.8)
XYZ	xyz(6.6508, 8.6814, 14.9580)
Luminance	0.0868 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155B6A #6A2415

analogous

#156A4E #155B6A #15316A

triadic

#155B6A #6A155B #5B6A15

tetradic

#155B6A #4E156A #6A2415 #316A15

square

#155B6A #4E156A #6A2415 #316A15

split-complementary

#155B6A #6A1531 #6A4E15

monochromatic

#05161A #0B2F37 #155B6A #1F879D #29B3D0

Accessibility & contrast

On white

7.67

#155B6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#155B6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155B6A

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155B6A	#FFFFFF	#000000	##FFFFFF
##155B6A	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#51586B

Deuteranopia (green-blind)

#45506A

Tritanopia (blue-blind)

#006060

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #155b6a;
/* rgb */ color: rgb(21, 91, 106);
/* oklch */ color: oklch(43.7% 0.070 215.8);

Tailwind

colors: {
  custom: {
    50: '#628994',
    500: '#155b6a',
    950: '#000000',
  },
}

SCSS

$custom: #155b6a;
$custom-light: #628994;
$custom-dark: #000000;

JSON

{
  "hex": "#155b6a",
  "rgb": {
    "r": 21,
    "g": 91,
    "b": 106
  },
  "hsl": {
    "h": 190.588,
    "s": 66.929,
    "l": 24.902
  },
  "oklch": {
    "l": 0.43667,
    "c": 0.0699,
    "h": 215.8
  },
  "luminance": 0.08682
}

Semantic roles & 50–950 ramp

primary

#155B6A

secondary

#A14C3A

accent

#5C3EEA

background

#F6F8F9

surface

#EBF0F1

border

#C6CBCB

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #155B6A

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

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