#255EB0#255EB0

#255EB0 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.0% C 0.144 H 258.1°. Best body text is #FFFFFF at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#255EB0
RGB	rgb(37, 94, 176)
HSL	hsl(215, 65%, 42%)
HSV	hsv(215, 79%, 69%)
CMYK	cmyk(79%, 46.6%, 0%, 31%)
CIE-LAB	lab(40.46, 11.57, -48.96)
CIE-LCH	lch(40.46, 50.31, 283.29°)
OKLab	oklab(49.02% -0.0296 -0.1405)
OKLCH	oklch(49.02% 0.144 258.1)
XYZ	xyz(12.5992, 11.5318, 42.6277)
Luminance	0.1153 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255EB0 #B07725

analogous

#25A4B0 #255EB0 #3225B0

triadic

#255EB0 #B0255E #5EB025

tetradic

#255EB0 #B025A4 #B07725 #25B032

square

#255EB0 #B025A4 #B07725 #25B032

split-complementary

#255EB0 #B03225 #A4B025

monochromatic

#10284B #1A437D #255EB0 #3C7BD6 #6F9DE1

Accessibility & contrast

On white

6.35

#255EB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#255EB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255EB0

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255EB0	#FFFFFF	#000000	##FFFFFF
##255EB0	1.00	6.35	3.31	6.35
#FFFFFF	6.35	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3266B3

Deuteranopia (green-blind)

#0D59AE

Tritanopia (blue-blind)

#00727E

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #255eb0;
/* rgb */ color: rgb(37, 94, 176);
/* oklch */ color: oklch(49.0% 0.144 258.1);

Tailwind

colors: {
  custom: {
    50: '#758bc8',
    500: '#255eb0',
    950: '#000000',
  },
}

SCSS

$custom: #255eb0;
$custom-light: #758bc8;
$custom-dark: #000000;

JSON

{
  "hex": "#255eb0",
  "rgb": {
    "r": 37,
    "g": 94,
    "b": 176
  },
  "hsl": {
    "h": 215.396,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.49021,
    "c": 0.14363,
    "h": 258.1
  },
  "luminance": 0.11533
}

Semantic roles & 50–950 ramp

primary

#255EB0

secondary

#C7A16A

accent

#A340E8

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #255EB0

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

Preview Lab → · Contrast checker → · Palette generator →