#255B6F#255B6F

#255B6F is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.4% C 0.065 H 225.6°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#255B6F
RGB	rgb(37, 91, 111)
HSL	hsl(196, 50%, 29%)
HSV	hsv(196, 67%, 44%)
CMYK	cmyk(66.7%, 18%, 0%, 56.5%)
CIE-LAB	lab(36.03, -11.02, -16.69)
CIE-LCH	lch(36.03, 20.00, 236.55°)
OKLab	oklab(44.4% -0.0456 -0.0466)
OKLCH	oklch(44.4% 0.065 225.6)
XYZ	xyz(7.3721, 9.0224, 16.3888)
Luminance	0.0902 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255B6F #6F3925

analogous

#256F5E #255B6F #25366F

triadic

#255B6F #6F255B #5B6F25

tetradic

#255B6F #5E256F #6F3925 #366F25

square

#255B6F #5E256F #6F3925 #366F25

split-complementary

#255B6F #6F2536 #6F5E25

monochromatic

#081317 #163541 #255B6F #34819D #4BA3C3

Accessibility & contrast

On white

7.49

#255B6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#255B6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255B6F

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255B6F	#FFFFFF	#000000	##FFFFFF
##255B6F	1.00	7.49	2.80	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#505970

Deuteranopia (green-blind)

#46516F

Tritanopia (blue-blind)

#006161

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #255b6f;
/* rgb */ color: rgb(37, 91, 111);
/* oklch */ color: oklch(44.4% 0.065 225.6);

Tailwind

colors: {
  custom: {
    50: '#688998',
    500: '#255b6f',
    950: '#000000',
  },
}

SCSS

$custom: #255b6f;
$custom-light: #688998;
$custom-dark: #000000;

JSON

{
  "hex": "#255b6f",
  "rgb": {
    "r": 37,
    "g": 91,
    "b": 111
  },
  "hsl": {
    "h": 196.216,
    "s": 50,
    "l": 29.02
  },
  "oklch": {
    "l": 0.44398,
    "c": 0.06519,
    "h": 225.6
  },
  "luminance": 0.09023
}

Semantic roles & 50–950 ramp

primary

#255B6F

secondary

#A2654E

accent

#744EDA

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070B0D

muted

#7A7C7E

Preview Lab

Preview with #255B6F

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

Preview Lab → · Contrast checker → · Palette generator →