#255BBA#255BBA

#255BBA is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.1% C 0.161 H 260.8°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#255BBA
RGB	rgb(37, 91, 186)
HSL	hsl(218, 67%, 44%)
HSV	hsv(218, 80%, 73%)
CMYK	cmyk(80.1%, 51.1%, 0%, 27.1%)
CIE-LAB	lab(40.28, 17.42, -55.13)
CIE-LCH	lch(40.28, 57.81, 287.54°)
OKLab	oklab(49.09% -0.0258 -0.1587)
OKLCH	oklch(49.09% 0.161 260.8)
XYZ	xyz(13.3637, 11.4191, 47.9446)
Luminance	0.1142 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255BBA #BA8425

analogous

#25A5BA #255BBA #3925BA

triadic

#255BBA #BA255B #5BBA25

tetradic

#255BBA #BA25A5 #BA8425 #25BA39

square

#255BBA #BA25A5 #BA8425 #25BA39

split-complementary

#255BBA #BA3925 #A5BA25

monochromatic

#112954 #1B4287 #255BBA #4379DA #769EE4

Accessibility & contrast

On white

6.39

#255BBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#255BBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255BBA

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255BBA	#FFFFFF	#000000	##FFFFFF
##255BBA	1.00	6.39	3.28	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D66BD

Deuteranopia (green-blind)

#0059B8

Tritanopia (blue-blind)

#007282

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #255bba;
/* rgb */ color: rgb(37, 91, 186);
/* oklch */ color: oklch(49.1% 0.161 260.8);

Tailwind

colors: {
  custom: {
    50: '#7888cf',
    500: '#255bba',
    950: '#000000',
  },
}

SCSS

$custom: #255bba;
$custom-light: #7888cf;
$custom-dark: #000000;

JSON

{
  "hex": "#255bba",
  "rgb": {
    "r": 37,
    "g": 91,
    "b": 186
  },
  "hsl": {
    "h": 218.255,
    "s": 66.816,
    "l": 43.725
  },
  "oklch": {
    "l": 0.49094,
    "c": 0.16082,
    "h": 260.8
  },
  "luminance": 0.11421
}

Semantic roles & 50–950 ramp

primary

#255BBA

secondary

#CBAA70

accent

#AC3EEA

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0A0B14

muted

#7C7C82

Preview Lab

Preview with #255BBA

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

Preview Lab → · Contrast checker → · Palette generator →