#2557BD#2557BD

#2557BD is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.5% C 0.170 H 262.4°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#2557BD
RGB	rgb(37, 87, 189)
HSL	hsl(220, 67%, 44%)
HSV	hsv(220, 80%, 74%)
CMYK	cmyk(80.4%, 54%, 0%, 25.9%)
CIE-LAB	lab(39.38, 21.21, -58.33)
CIE-LCH	lch(39.38, 62.07, 289.99°)
OKLab	oklab(48.48% -0.0226 -0.1682)
OKLCH	oklch(48.48% 0.17 262.4)
XYZ	xyz(13.3531, 10.8822, 49.5310)
Luminance	0.1088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2557BD #BD8B25

analogous

#25A3BD #2557BD #3F25BD

triadic

#2557BD #BD2557 #57BD25

tetradic

#2557BD #BD25A3 #BD8B25 #25BD3F

square

#2557BD #BD25A3 #BD8B25 #25BD3F

split-complementary

#2557BD #BD3F25 #A3BD25

monochromatic

#112857 #1B3F8A #2557BD #4576DB #789CE5

Accessibility & contrast

On white

6.61

#2557BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#2557BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2557BD

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2557BD	#FFFFFF	#000000	##FFFFFF
##2557BD	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C1

Deuteranopia (green-blind)

#0056BB

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2557bd;
/* rgb */ color: rgb(37, 87, 189);
/* oklch */ color: oklch(48.5% 0.170 262.4);

Tailwind

colors: {
  custom: {
    50: '#7885d2',
    500: '#2557bd',
    950: '#000000',
  },
}

SCSS

$custom: #2557bd;
$custom-light: #7885d2;
$custom-dark: #000000;

JSON

{
  "hex": "#2557bd",
  "rgb": {
    "r": 37,
    "g": 87,
    "b": 189
  },
  "hsl": {
    "h": 220.263,
    "s": 67.257,
    "l": 44.314
  },
  "oklch": {
    "l": 0.4848,
    "c": 0.16976,
    "h": 262.4
  },
  "luminance": 0.10884
}

Semantic roles & 50–950 ramp

primary

#2557BD

secondary

#CCAE72

accent

#B13EEA

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #2557BD

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

Preview Lab → · Contrast checker → · Palette generator →