#2557A3#2557A3

#2557A3 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 46.5% C 0.134 H 258.8°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#2557A3
RGB	rgb(37, 87, 163)
HSL	hsl(216, 63%, 39%)
HSV	hsv(216, 77%, 64%)
CMYK	cmyk(77.3%, 46.6%, 0%, 36.1%)
CIE-LAB	lab(37.58, 11.09, -45.89)
CIE-LCH	lch(37.58, 47.21, 283.58°)
OKLab	oklab(46.53% -0.0261 -0.1316)
OKLCH	oklch(46.53% 0.134 258.8)
XYZ	xyz(10.7796, 9.8528, 35.9769)
Luminance	0.0985 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2557A3 #A37125

analogous

#2596A3 #2557A3 #3225A3

triadic

#2557A3 #A32557 #57A325

tetradic

#2557A3 #A32596 #A37125 #25A332

square

#2557A3 #A32596 #A37125 #25A332

split-complementary

#2557A3 #A33225 #96A325

monochromatic

#0E223F #1A3C71 #2557A3 #3472D1 #6695DC

Accessibility & contrast

On white

7.07

#2557A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#2557A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2557A3

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2557A3	#FFFFFF	#000000	##FFFFFF
##2557A3	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5FA6

Deuteranopia (green-blind)

#1053A1

Tritanopia (blue-blind)

#006975

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #2557a3;
/* rgb */ color: rgb(37, 87, 163);
/* oklch */ color: oklch(46.5% 0.134 258.8);

Tailwind

colors: {
  custom: {
    50: '#7285bf',
    500: '#2557a3',
    950: '#000000',
  },
}

SCSS

$custom: #2557a3;
$custom-light: #7285bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2557a3",
  "rgb": {
    "r": 37,
    "g": 87,
    "b": 163
  },
  "hsl": {
    "h": 216.19,
    "s": 63,
    "l": 39.216
  },
  "oklch": {
    "l": 0.46525,
    "c": 0.13421,
    "h": 258.8
  },
  "luminance": 0.09854
}

Semantic roles & 50–950 ramp

primary

#2557A3

secondary

#C29C62

accent

#A542E6

background

#F7F8FB

surface

#EDEFF7

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2557A3

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

Preview Lab → · Contrast checker → · Palette generator →