#255AA8#255AA8

#255AA8 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.6% C 0.137 H 258.4°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#255AA8
RGB	rgb(37, 90, 168)
HSL	hsl(216, 64%, 40%)
HSV	hsv(216, 78%, 66%)
CMYK	cmyk(78%, 46.4%, 0%, 34.1%)
CIE-LAB	lab(38.78, 11.07, -46.94)
CIE-LCH	lch(38.78, 48.22, 283.27°)
OKLab	oklab(47.56% -0.0277 -0.1347)
OKLCH	oklch(47.56% 0.137 258.4)
XYZ	xyz(11.4844, 10.5315, 38.4657)
Luminance	0.1053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255AA8 #A87325

analogous

#259BA8 #255AA8 #3125A8

triadic

#255AA8 #A8255A #5AA825

tetradic

#255AA8 #A8259B #A87325 #25A831

square

#255AA8 #A8259B #A87325 #25A831

split-complementary

#255AA8 #A83125 #9BA825

monochromatic

#0F2444 #1A3F76 #255AA8 #3776D3 #6999DE

Accessibility & contrast

On white

6.76

#255AA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#255AA8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255AA8

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255AA8	#FFFFFF	#000000	##FFFFFF
##255AA8	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3162AB

Deuteranopia (green-blind)

#1156A6

Tritanopia (blue-blind)

#006D79

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #255aa8;
/* rgb */ color: rgb(37, 90, 168);
/* oklch */ color: oklch(47.6% 0.137 258.4);

Tailwind

colors: {
  custom: {
    50: '#7388c2',
    500: '#255aa8',
    950: '#000000',
  },
}

SCSS

$custom: #255aa8;
$custom-light: #7388c2;
$custom-dark: #000000;

JSON

{
  "hex": "#255aa8",
  "rgb": {
    "r": 37,
    "g": 90,
    "b": 168
  },
  "hsl": {
    "h": 215.725,
    "s": 63.902,
    "l": 40.196
  },
  "oklch": {
    "l": 0.47557,
    "c": 0.13749,
    "h": 258.4
  },
  "luminance": 0.10533
}

Semantic roles & 50–950 ramp

primary

#255AA8

secondary

#C49D65

accent

#A441E7

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #255AA8

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

Preview Lab → · Contrast checker → · Palette generator →