#255BB2#255BB2

#255BB2 is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.5% C 0.150 H 259.7°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#255BB2
RGB	rgb(37, 91, 178)
HSL	hsl(217, 66%, 42%)
HSV	hsv(217, 79%, 70%)
CMYK	cmyk(79.2%, 48.9%, 0%, 30.2%)
CIE-LAB	lab(39.73, 14.31, -51.32)
CIE-LCH	lch(39.73, 53.28, 285.58°)
OKLab	oklab(48.5% -0.0269 -0.1475)
OKLCH	oklch(48.5% 0.15 259.7)
XYZ	xyz(12.5370, 11.0884, 43.5904)
Luminance	0.1109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255BB2 #B27C25

analogous

#25A2B2 #255BB2 #3525B2

triadic

#255BB2 #B2255B #5BB225

tetradic

#255BB2 #B225A2 #B27C25 #25B235

square

#255BB2 #B225A2 #B27C25 #25B235

split-complementary

#255BB2 #B23525 #A2B225

monochromatic

#10274D #1A417F #255BB2 #3D78D7 #709BE1

Accessibility & contrast

On white

6.53

#255BB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#255BB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255BB2

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255BB2	#FFFFFF	#000000	##FFFFFF
##255BB2	1.00	6.53	3.22	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2964B5

Deuteranopia (green-blind)

#0058B0

Tritanopia (blue-blind)

#00707E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #255bb2;
/* rgb */ color: rgb(37, 91, 178);
/* oklch */ color: oklch(48.5% 0.150 259.7);

Tailwind

colors: {
  custom: {
    50: '#7688ca',
    500: '#255bb2',
    950: '#000000',
  },
}

SCSS

$custom: #255bb2;
$custom-light: #7688ca;
$custom-dark: #000000;

JSON

{
  "hex": "#255bb2",
  "rgb": {
    "r": 37,
    "g": 91,
    "b": 178
  },
  "hsl": {
    "h": 217.021,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.48499,
    "c": 0.14997,
    "h": 259.7
  },
  "luminance": 0.1109
}

Semantic roles & 50–950 ramp

primary

#255BB2

secondary

#C8A46B

accent

#A83FE9

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #255BB2

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

Preview Lab → · Contrast checker → · Palette generator →