#255DA4#255DA4

#255DA4 is a mid, vivid cyan. Relative luminance 0.109; OKLCH L 48.0% C 0.128 H 256.0°. Best body text is #FFFFFF at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#255DA4
RGB	rgb(37, 93, 164)
HSL	hsl(214, 63%, 39%)
HSV	hsv(214, 77%, 64%)
CMYK	cmyk(77.4%, 43.3%, 0%, 35.7%)
CIE-LAB	lab(39.41, 7.56, -43.54)
CIE-LCH	lch(39.41, 44.20, 279.84°)
OKLab	oklab(47.97% -0.0311 -0.1246)
OKLCH	oklch(47.97% 0.128 256)
XYZ	xyz(11.3757, 10.9010, 36.6193)
Luminance	0.1090 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255DA4 #A46C25

analogous

#259DA4 #255DA4 #2C25A4

triadic

#255DA4 #A4255D #5DA425

tetradic

#255DA4 #A4259D #A46C25 #25A42C

square

#255DA4 #A4259D #A46C25 #25A42C

split-complementary

#255DA4 #A42C25 #9DA425

monochromatic

#0E2440 #1A4172 #255DA4 #357AD1 #679BDD

Accessibility & contrast

On white

6.60

#255DA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#255DA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255DA4

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255DA4	#FFFFFF	#000000	##FFFFFF
##255DA4	1.00	6.60	3.18	6.60
#FFFFFF	6.60	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A63A7

Deuteranopia (green-blind)

#2257A3

Tritanopia (blue-blind)

#006E78

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #255da4;
/* rgb */ color: rgb(37, 93, 164);
/* oklch */ color: oklch(48.0% 0.128 256.0);

Tailwind

colors: {
  custom: {
    50: '#728abf',
    500: '#255da4',
    950: '#000000',
  },
}

SCSS

$custom: #255da4;
$custom-light: #728abf;
$custom-dark: #000000;

JSON

{
  "hex": "#255da4",
  "rgb": {
    "r": 37,
    "g": 93,
    "b": 164
  },
  "hsl": {
    "h": 213.543,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.47966,
    "c": 0.12846,
    "h": 256
  },
  "luminance": 0.10902
}

Semantic roles & 50–950 ramp

primary

#255DA4

secondary

#C29862

accent

#9E42E6

background

#F7F8FB

surface

#EDF0F7

border

#C8CBD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #255DA4

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

Preview Lab → · Contrast checker → · Palette generator →