#2557BE#2557BE

#2557BE is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.6% C 0.171 H 262.5°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#2557BE
RGB	rgb(37, 87, 190)
HSL	hsl(220, 67%, 45%)
HSV	hsv(220, 81%, 75%)
CMYK	cmyk(80.5%, 54.2%, 0%, 25.5%)
CIE-LAB	lab(39.46, 21.60, -58.80)
CIE-LCH	lch(39.46, 62.64, 290.17°)
OKLab	oklab(48.56% -0.0225 -0.1696)
OKLCH	oklch(48.56% 0.171 262.5)
XYZ	xyz(13.4621, 10.9258, 50.1046)
Luminance	0.1093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2557BE #BE8C25

analogous

#25A4BE #2557BE #3F25BE

triadic

#2557BE #BE2557 #57BE25

tetradic

#2557BE #BE25A4 #BE8C25 #25BE3F

square

#2557BE #BE25A4 #BE8C25 #25BE3F

split-complementary

#2557BE #BE3F25 #A4BE25

monochromatic

#112858 #1B408B #2557BE #4576DB #799CE5

Accessibility & contrast

On white

6.59

#2557BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#2557BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2557BE

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2557BE	#FFFFFF	#000000	##FFFFFF
##2557BE	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C2

Deuteranopia (green-blind)

#0056BC

Tritanopia (blue-blind)

#007082

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2557be;
/* rgb */ color: rgb(37, 87, 190);
/* oklch */ color: oklch(48.6% 0.171 262.5);

Tailwind

colors: {
  custom: {
    50: '#7985d2',
    500: '#2557be',
    950: '#000000',
  },
}

SCSS

$custom: #2557be;
$custom-light: #7985d2;
$custom-dark: #000000;

JSON

{
  "hex": "#2557be",
  "rgb": {
    "r": 37,
    "g": 87,
    "b": 190
  },
  "hsl": {
    "h": 220.392,
    "s": 67.401,
    "l": 44.51
  },
  "oklch": {
    "l": 0.48559,
    "c": 0.17109,
    "h": 262.5
  },
  "luminance": 0.10927
}

Semantic roles & 50–950 ramp

primary

#2557BE

secondary

#CDAF72

accent

#B23EEA

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #2557BE

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

Preview Lab → · Contrast checker → · Palette generator →