#2557A9#2557A9

#2557A9 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.0% C 0.142 H 259.9°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#2557A9
RGB	rgb(37, 87, 169)
HSL	hsl(217, 64%, 40%)
HSV	hsv(217, 78%, 66%)
CMYK	cmyk(78.1%, 48.5%, 0%, 33.7%)
CIE-LAB	lab(37.97, 13.43, -48.83)
CIE-LCH	lch(37.97, 50.64, 285.38°)
OKLab	oklab(46.96% -0.0251 -0.1403)
OKLCH	oklch(46.96% 0.143 259.9)
XYZ	xyz(11.3300, 10.0730, 38.8756)
Luminance	0.1007 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2557A9 #A97725

analogous

#2599A9 #2557A9 #3525A9

triadic

#2557A9 #A92557 #57A925

tetradic

#2557A9 #A92599 #A97725 #25A935

square

#2557A9 #A92599 #A97725 #25A935

split-complementary

#2557A9 #A93525 #99A925

monochromatic

#0F2345 #1A3D77 #2557A9 #3873D3 #6A96DE

Accessibility & contrast

On white

6.97

#2557A9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#2557A9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2557A9

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2557A9	#FFFFFF	#000000	##FFFFFF
##2557A9	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2960AC

Deuteranopia (green-blind)

#0054A7

Tritanopia (blue-blind)

#006B78

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #2557a9;
/* rgb */ color: rgb(37, 87, 169);
/* oklch */ color: oklch(47.0% 0.142 259.9);

Tailwind

colors: {
  custom: {
    50: '#7485c3',
    500: '#2557a9',
    950: '#000000',
  },
}

SCSS

$custom: #2557a9;
$custom-light: #7485c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2557a9",
  "rgb": {
    "r": 37,
    "g": 87,
    "b": 169
  },
  "hsl": {
    "h": 217.273,
    "s": 64.078,
    "l": 40.392
  },
  "oklch": {
    "l": 0.46957,
    "c": 0.1425,
    "h": 259.9
  },
  "luminance": 0.10074
}

Semantic roles & 50–950 ramp

primary

#2557A9

secondary

#C4A065

accent

#A841E7

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2557A9

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

Preview Lab → · Contrast checker → · Palette generator →