#255D6B#255D6B

#255D6B is a dark, moderate cyan. Relative luminance 0.093; OKLCH L 44.7% C 0.062 H 216.9°. Best body text is #FFFFFF at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#255D6B
RGB	rgb(37, 93, 107)
HSL	hsl(192, 49%, 28%)
HSV	hsv(192, 65%, 42%)
CMYK	cmyk(65.4%, 13.1%, 0%, 58%)
CIE-LAB	lab(36.52, -13.57, -13.45)
CIE-LCH	lch(36.52, 19.10, 224.75°)
OKLab	oklab(44.74% -0.0497 -0.0374)
OKLCH	oklch(44.74% 0.062 216.9)
XYZ	xyz(7.3301, 9.2828, 15.3125)
Luminance	0.0928 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255D6B #6B3325

analogous

#256B56 #255D6B #253A6B

triadic

#255D6B #6B255D #5D6B25

tetradic

#255D6B #56256B #6B3325 #3A6B25

square

#255D6B #56256B #6B3325 #3A6B25

split-complementary

#255D6B #6B253A #6B5625

monochromatic

#081417 #15353E #255D6B #358598 #4AA9C0

Accessibility & contrast

On white

7.35

#255D6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#255D6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255D6B

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255D6B	#FFFFFF	#000000	##FFFFFF
##255D6B	1.00	7.35	2.86	7.35
#FFFFFF	7.35	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#545A6C

Deuteranopia (green-blind)

#49536B

Tritanopia (blue-blind)

#006261

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #255d6b;
/* rgb */ color: rgb(37, 93, 107);
/* oklch */ color: oklch(44.7% 0.062 216.9);

Tailwind

colors: {
  custom: {
    50: '#688b95',
    500: '#255d6b',
    950: '#000000',
  },
}

SCSS

$custom: #255d6b;
$custom-light: #688b95;
$custom-dark: #000000;

JSON

{
  "hex": "#255d6b",
  "rgb": {
    "r": 37,
    "g": 93,
    "b": 107
  },
  "hsl": {
    "h": 192,
    "s": 48.611,
    "l": 28.235
  },
  "oklch": {
    "l": 0.44741,
    "c": 0.06219,
    "h": 216.9
  },
  "luminance": 0.09284
}

Semantic roles & 50–950 ramp

primary

#255D6B

secondary

#9E5E4E

accent

#6B50D8

background

#F6F8F9

surface

#EBF0F1

border

#C6CBCB

text

#070C0D

muted

#7A7D7E

Preview Lab

Preview with #255D6B

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

Preview Lab → · Contrast checker → · Palette generator →