#255FB1#255FB1

#255FB1 is a mid, vivid blue. Relative luminance 0.118; OKLCH L 49.3% C 0.144 H 257.8°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#255FB1
RGB	rgb(37, 95, 177)
HSL	hsl(215, 65%, 42%)
HSV	hsv(215, 79%, 69%)
CMYK	cmyk(79.1%, 46.3%, 0%, 30.6%)
CIE-LAB	lab(40.82, 11.31, -48.98)
CIE-LCH	lch(40.82, 50.27, 283.00°)
OKLab	oklab(49.32% -0.0303 -0.1406)
OKLCH	oklch(49.32% 0.144 257.8)
XYZ	xyz(12.7881, 11.7505, 43.1805)
Luminance	0.1175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255FB1 #B17725

analogous

#25A5B1 #255FB1 #3125B1

triadic

#255FB1 #B1255F #5FB125

tetradic

#255FB1 #B125A5 #B17725 #25B131

square

#255FB1 #B125A5 #B17725 #25B131

split-complementary

#255FB1 #B13125 #A5B125

monochromatic

#10294C #1A447E #255FB1 #3D7CD6 #6F9EE1

Accessibility & contrast

On white

6.27

#255FB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#255FB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255FB1

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255FB1	#FFFFFF	#000000	##FFFFFF
##255FB1	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3367B4

Deuteranopia (green-blind)

#105AAF

Tritanopia (blue-blind)

#00737F

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #255fb1;
/* rgb */ color: rgb(37, 95, 177);
/* oklch */ color: oklch(49.3% 0.144 257.8);

Tailwind

colors: {
  custom: {
    50: '#758bc9',
    500: '#255fb1',
    950: '#000000',
  },
}

SCSS

$custom: #255fb1;
$custom-light: #758bc9;
$custom-dark: #000000;

JSON

{
  "hex": "#255fb1",
  "rgb": {
    "r": 37,
    "g": 95,
    "b": 177
  },
  "hsl": {
    "h": 215.143,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.49315,
    "c": 0.14379,
    "h": 257.8
  },
  "luminance": 0.11752
}

Semantic roles & 50–950 ramp

primary

#255FB1

secondary

#C8A16A

accent

#A23FE8

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #255FB1

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

Preview Lab → · Contrast checker → · Palette generator →