#255B6E#255B6E

#255B6E is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.4% C 0.064 H 224.3°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#255B6E
RGB	rgb(37, 91, 110)
HSL	hsl(196, 50%, 29%)
HSV	hsv(196, 66%, 43%)
CMYK	cmyk(66.4%, 17.3%, 0%, 56.9%)
CIE-LAB	lab(35.99, -11.37, -16.13)
CIE-LCH	lch(35.99, 19.74, 234.82°)
OKLab	oklab(44.35% -0.046 -0.045)
OKLCH	oklch(44.35% 0.064 224.3)
XYZ	xyz(7.3174, 9.0005, 16.1005)
Luminance	0.0900 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255B6E #6E3825

analogous

#256E5D #255B6E #25376E

triadic

#255B6E #6E255B #5B6E25

tetradic

#255B6E #5D256E #6E3825 #376E25

square

#255B6E #5D256E #6E3825 #376E25

split-complementary

#255B6E #6E2537 #6E5D25

monochromatic

#081317 #163540 #255B6E #34819C #4BA3C2

Accessibility & contrast

On white

7.50

#255B6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#255B6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255B6E

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255B6E	#FFFFFF	#000000	##FFFFFF
##255B6E	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#50596F

Deuteranopia (green-blind)

#46516E

Tritanopia (blue-blind)

#006161

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #255b6e;
/* rgb */ color: rgb(37, 91, 110);
/* oklch */ color: oklch(44.4% 0.064 224.3);

Tailwind

colors: {
  custom: {
    50: '#688997',
    500: '#255b6e',
    950: '#000000',
  },
}

SCSS

$custom: #255b6e;
$custom-light: #688997;
$custom-dark: #000000;

JSON

{
  "hex": "#255b6e",
  "rgb": {
    "r": 37,
    "g": 91,
    "b": 110
  },
  "hsl": {
    "h": 195.616,
    "s": 49.66,
    "l": 28.824
  },
  "oklch": {
    "l": 0.4435,
    "c": 0.06437,
    "h": 224.3
  },
  "luminance": 0.09001
}

Semantic roles & 50–950 ramp

primary

#255B6E

secondary

#A1644E

accent

#734FD9

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070B0D

muted

#7A7C7E

Preview Lab

Preview with #255B6E

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

Preview Lab → · Contrast checker → · Palette generator →