#255BBE#255BBE

#255BBE is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.4% C 0.166 H 261.3°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#255BBE
RGB	rgb(37, 91, 190)
HSL	hsl(219, 67%, 45%)
HSV	hsv(219, 81%, 75%)
CMYK	cmyk(80.5%, 52.1%, 0%, 25.5%)
CIE-LAB	lab(40.56, 18.97, -57.01)
CIE-LCH	lch(40.56, 60.08, 288.41°)
OKLab	oklab(49.4% -0.0253 -0.1643)
OKLCH	oklch(49.4% 0.166 261.3)
XYZ	xyz(13.7949, 11.5915, 50.2155)
Luminance	0.1159 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255BBE #BE8825

analogous

#25A7BE #255BBE #3C25BE

triadic

#255BBE #BE255B #5BBE25

tetradic

#255BBE #BE25A7 #BE8825 #25BE3C

square

#255BBE #BE25A7 #BE8825 #25BE3C

split-complementary

#255BBE #BE3C25 #A7BE25

monochromatic

#112A58 #1B428B #255BBE #457ADB #799FE5

Accessibility & contrast

On white

6.33

#255BBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#255BBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255BBE

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255BBE	#FFFFFF	#000000	##FFFFFF
##255BBE	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1567C2

Deuteranopia (green-blind)

#0059BC

Tritanopia (blue-blind)

#007384

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #255bbe;
/* rgb */ color: rgb(37, 91, 190);
/* oklch */ color: oklch(49.4% 0.166 261.3);

Tailwind

colors: {
  custom: {
    50: '#7888d2',
    500: '#255bbe',
    950: '#000000',
  },
}

SCSS

$custom: #255bbe;
$custom-light: #7888d2;
$custom-dark: #000000;

JSON

{
  "hex": "#255bbe",
  "rgb": {
    "r": 37,
    "g": 91,
    "b": 190
  },
  "hsl": {
    "h": 218.824,
    "s": 67.401,
    "l": 44.51
  },
  "oklch": {
    "l": 0.49398,
    "c": 0.1662,
    "h": 261.3
  },
  "luminance": 0.11593
}

Semantic roles & 50–950 ramp

primary

#255BBE

secondary

#CDAD72

accent

#AD3EEA

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #255BBE

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

Preview Lab → · Contrast checker → · Palette generator →