#255B6D#255B6D

#255B6D is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.3% C 0.064 H 223.0°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#255B6D
RGB	rgb(37, 91, 109)
HSL	hsl(195, 49%, 29%)
HSV	hsv(195, 66%, 43%)
CMYK	cmyk(66.1%, 16.5%, 0%, 57.3%)
CIE-LAB	lab(35.94, -11.72, -15.57)
CIE-LCH	lch(35.94, 19.49, 233.05°)
OKLab	oklab(44.3% -0.0465 -0.0434)
OKLCH	oklch(44.3% 0.064 223)
XYZ	xyz(7.2633, 8.9789, 15.8153)
Luminance	0.0898 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255B6D #6D3725

analogous

#256D5B #255B6D #25376D

triadic

#255B6D #6D255B #5B6D25

tetradic

#255B6D #5B256D #6D3725 #376D25

square

#255B6D #5B256D #6D3725 #376D25

split-complementary

#255B6D #6D2537 #6D5B25

monochromatic

#081317 #15353F #255B6D #35819B #4BA4C2

Accessibility & contrast

On white

7.51

#255B6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#255B6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255B6D

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255B6D	#FFFFFF	#000000	##FFFFFF
##255B6D	1.00	7.51	2.80	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#51596E

Deuteranopia (green-blind)

#46516D

Tritanopia (blue-blind)

#006161

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #255b6d;
/* rgb */ color: rgb(37, 91, 109);
/* oklch */ color: oklch(44.3% 0.064 223.0);

Tailwind

colors: {
  custom: {
    50: '#688997',
    500: '#255b6d',
    950: '#000000',
  },
}

SCSS

$custom: #255b6d;
$custom-light: #688997;
$custom-dark: #000000;

JSON

{
  "hex": "#255b6d",
  "rgb": {
    "r": 37,
    "g": 91,
    "b": 109
  },
  "hsl": {
    "h": 195,
    "s": 49.315,
    "l": 28.627
  },
  "oklch": {
    "l": 0.44303,
    "c": 0.06358,
    "h": 223
  },
  "luminance": 0.0898
}

Semantic roles & 50–950 ramp

primary

#255B6D

secondary

#A0624E

accent

#714FD9

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070B0D

muted

#7A7C7E

Preview Lab

Preview with #255B6D

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

Preview Lab → · Contrast checker → · Palette generator →