#155E7B#155E7B

#155E7B is a mid, moderate cyan. Relative luminance 0.096; OKLCH L 45.3% C 0.082 H 230.1°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#155E7B
RGB	rgb(21, 94, 123)
HSL	hsl(197, 71%, 28%)
HSV	hsv(197, 83%, 48%)
CMYK	cmyk(82.9%, 23.6%, 0%, 51.8%)
CIE-LAB	lab(37.10, -10.82, -22.46)
CIE-LCH	lch(37.10, 24.93, 244.27°)
OKLab	oklab(45.31% -0.0528 -0.0632)
OKLCH	oklch(45.31% 0.082 230.1)
XYZ	xyz(7.8857, 9.5939, 20.1713)
Luminance	0.0959 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155E7B #7B3215

analogous

#157B65 #155E7B #152B7B

triadic

#155E7B #7B155E #5E7B15

tetradic

#155E7B #65157B #7B3215 #2B7B15

square

#155E7B #65157B #7B3215 #2B7B15

split-complementary

#155E7B #7B152B #7B6515

monochromatic

#04141A #0C3647 #155E7B #1E86AF #2FAADB

Accessibility & contrast

On white

7.19

#155E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#155E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155E7B

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155E7B	#FFFFFF	#000000	##FFFFFF
##155E7B	1.00	7.19	2.92	7.19
#FFFFFF	7.19	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F5D7C

Deuteranopia (green-blind)

#42537B

Tritanopia (blue-blind)

#006668

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #155e7b;
/* rgb */ color: rgb(21, 94, 123);
/* oklch */ color: oklch(45.3% 0.082 230.1);

Tailwind

colors: {
  custom: {
    50: '#658ba1',
    500: '#155e7b',
    950: '#000000',
  },
}

SCSS

$custom: #155e7b;
$custom-light: #658ba1;
$custom-dark: #000000;

JSON

{
  "hex": "#155e7b",
  "rgb": {
    "r": 21,
    "g": 94,
    "b": 123
  },
  "hsl": {
    "h": 197.059,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.45308,
    "c": 0.08234,
    "h": 230.1
  },
  "luminance": 0.09595
}

Semantic roles & 50–950 ramp

primary

#155E7B

secondary

#B05D3B

accent

#6D3AEE

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070C0F

muted

#7A7D7E

Preview Lab

Preview with #155E7B

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

Preview Lab → · Contrast checker → · Palette generator →