#155F81#155F81

#155F81 is a mid, moderate cyan. Relative luminance 0.099; OKLCH L 45.9% C 0.088 H 234.1°. Best body text is #FFFFFF at 7.03:1 contrast (WCAG AA passes).

Color values

HEX	#155F81
RGB	rgb(21, 95, 129)
HSL	hsl(199, 72%, 29%)
HSV	hsv(199, 84%, 51%)
CMYK	cmyk(83.7%, 26.4%, 0%, 49.4%)
CIE-LAB	lab(37.71, -9.14, -25.18)
CIE-LCH	lch(37.71, 26.78, 250.05°)
OKLab	oklab(45.89% -0.0515 -0.0711)
OKLCH	oklch(45.89% 0.088 234.1)
XYZ	xyz(8.3623, 9.9278, 22.2401)
Luminance	0.0993 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155F81 #813715

analogous

#15816D #155F81 #152981

triadic

#155F81 #81155F #5F8115

tetradic

#155F81 #6D1581 #813715 #298115

square

#155F81 #6D1581 #813715 #298115

split-complementary

#155F81 #811529 #816D15

monochromatic

#04131A #0C384C #155F81 #1E86B6 #33A8DE

Accessibility & contrast

On white

7.03

#155F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#155F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155F81

7.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155F81	#FFFFFF	#000000	##FFFFFF
##155F81	1.00	7.03	2.99	7.03
#FFFFFF	7.03	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E5E83

Deuteranopia (green-blind)

#405480

Tritanopia (blue-blind)

#00686B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #155f81;
/* rgb */ color: rgb(21, 95, 129);
/* oklch */ color: oklch(45.9% 0.088 234.1);

Tailwind

colors: {
  custom: {
    50: '#668ca5',
    500: '#155f81',
    950: '#000000',
  },
}

SCSS

$custom: #155f81;
$custom-light: #668ca5;
$custom-dark: #000000;

JSON

{
  "hex": "#155f81",
  "rgb": {
    "r": 21,
    "g": 95,
    "b": 129
  },
  "hsl": {
    "h": 198.889,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.45888,
    "c": 0.08776,
    "h": 234.1
  },
  "luminance": 0.09929
}

Semantic roles & 50–950 ramp

primary

#155F81

secondary

#B6623C

accent

#7239EF

background

#F6F8FA

surface

#EBF0F4

border

#C6CBCE

text

#070C0F

muted

#7A7D7F

Preview Lab

Preview with #155F81

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

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