#255E8B#255E8B

#255E8B is a mid, moderate cyan. Relative luminance 0.103; OKLCH L 46.6% C 0.094 H 245.7°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#255E8B
RGB	rgb(37, 94, 139)
HSL	hsl(206, 58%, 35%)
HSV	hsv(206, 73%, 55%)
CMYK	cmyk(73.4%, 32.4%, 0%, 45.5%)
CIE-LAB	lab(38.31, -2.67, -30.29)
CIE-LCH	lch(38.31, 30.41, 264.97°)
OKLab	oklab(46.64% -0.0387 -0.0858)
OKLCH	oklch(46.64% 0.094 245.7)
XYZ	xyz(9.4241, 10.2618, 25.9051)
Luminance	0.1026 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255E8B #8B5225

analogous

#258B85 #255E8B #252B8B

triadic

#255E8B #8B255E #5E8B25

tetradic

#255E8B #85258B #8B5225 #2B8B25

square

#255E8B #85258B #8B5225 #2B8B25

split-complementary

#255E8B #8B252B #8B8525

monochromatic

#0B1D2A #183D5B #255E8B #327FBB #589CD3

Accessibility & contrast

On white

6.88

#255E8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#255E8B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255E8B

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255E8B	#FFFFFF	#000000	##FFFFFF
##255E8B	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A608D

Deuteranopia (green-blind)

#3B568A

Tritanopia (blue-blind)

#00696E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #255e8b;
/* rgb */ color: rgb(37, 94, 139);
/* oklch */ color: oklch(46.6% 0.094 245.7);

Tailwind

colors: {
  custom: {
    50: '#6d8bad',
    500: '#255e8b',
    950: '#000000',
  },
}

SCSS

$custom: #255e8b;
$custom-light: #6d8bad;
$custom-dark: #000000;

JSON

{
  "hex": "#255e8b",
  "rgb": {
    "r": 37,
    "g": 94,
    "b": 139
  },
  "hsl": {
    "h": 206.471,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.46642,
    "c": 0.09412,
    "h": 245.7
  },
  "luminance": 0.10263
}

Semantic roles & 50–950 ramp

primary

#255E8B

secondary

#B78055

accent

#8B47E1

background

#F7F8FA

surface

#EDF0F4

border

#C8CBCE

text

#080C10

muted

#7B7D7F

Preview Lab

Preview with #255E8B

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

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