#255CB7#255CB7

#255CB7 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.1% C 0.156 H 260.0°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#255CB7
RGB	rgb(37, 92, 183)
HSL	hsl(217, 66%, 43%)
HSV	hsv(217, 80%, 72%)
CMYK	cmyk(79.8%, 49.7%, 0%, 28.2%)
CIE-LAB	lab(40.35, 15.60, -53.25)
CIE-LCH	lch(40.35, 55.49, 286.33°)
OKLab	oklab(49.09% -0.0269 -0.1532)
OKLCH	oklch(49.09% 0.156 260)
XYZ	xyz(13.1342, 11.4649, 46.3113)
Luminance	0.1147 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255CB7 #B78025

analogous

#25A5B7 #255CB7 #3725B7

triadic

#255CB7 #B7255C #5CB725

tetradic

#255CB7 #B725A5 #B78025 #25B737

square

#255CB7 #B725A5 #B78025 #25B737

split-complementary

#255CB7 #B73725 #A5B725

monochromatic

#102951 #1B4284 #255CB7 #417AD9 #749DE3

Accessibility & contrast

On white

6.38

#255CB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#255CB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255CB7

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255CB7	#FFFFFF	#000000	##FFFFFF
##255CB7	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2566BA

Deuteranopia (green-blind)

#0059B5

Tritanopia (blue-blind)

#007281

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #255cb7;
/* rgb */ color: rgb(37, 92, 183);
/* oklch */ color: oklch(49.1% 0.156 260.0);

Tailwind

colors: {
  custom: {
    50: '#7789cd',
    500: '#255cb7',
    950: '#000000',
  },
}

SCSS

$custom: #255cb7;
$custom-light: #7789cd;
$custom-dark: #000000;

JSON

{
  "hex": "#255cb7",
  "rgb": {
    "r": 37,
    "g": 92,
    "b": 183
  },
  "hsl": {
    "h": 217.397,
    "s": 66.364,
    "l": 43.137
  },
  "oklch": {
    "l": 0.49085,
    "c": 0.15554,
    "h": 260
  },
  "luminance": 0.11467
}

Semantic roles & 50–950 ramp

primary

#255CB7

secondary

#CAA76E

accent

#A93FE9

background

#F7F8FC

surface

#EEF0F9

border

#C9CBD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #255CB7

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

Preview Lab → · Contrast checker → · Palette generator →