#2557AC#2557AC

#2557AC is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.2% C 0.147 H 260.3°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#2557AC
RGB	rgb(37, 87, 172)
HSL	hsl(218, 65%, 41%)
HSV	hsv(218, 78%, 67%)
CMYK	cmyk(78.5%, 49.4%, 0%, 32.5%)
CIE-LAB	lab(38.18, 14.60, -50.28)
CIE-LCH	lch(38.18, 52.36, 286.20°)
OKLab	oklab(47.18% -0.0246 -0.1446)
OKLCH	oklch(47.18% 0.147 260.3)
XYZ	xyz(11.6148, 10.1869, 40.3759)
Luminance	0.1019 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2557AC #AC7A25

analogous

#259AAC #2557AC #3725AC

triadic

#2557AC #AC2557 #57AC25

tetradic

#2557AC #AC259A #AC7A25 #25AC37

square

#2557AC #AC259A #AC7A25 #25AC37

split-complementary

#2557AC #AC3725 #9AAC25

monochromatic

#0F2447 #1A3E7A #2557AC #3A73D5 #6C97DF

Accessibility & contrast

On white

6.91

#2557AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#2557AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2557AC

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2557AC	#FFFFFF	#000000	##FFFFFF
##2557AC	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2560AF

Deuteranopia (green-blind)

#0054AA

Tritanopia (blue-blind)

#006B79

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2557ac;
/* rgb */ color: rgb(37, 87, 172);
/* oklch */ color: oklch(47.2% 0.147 260.3);

Tailwind

colors: {
  custom: {
    50: '#7485c5',
    500: '#2557ac',
    950: '#000000',
  },
}

SCSS

$custom: #2557ac;
$custom-light: #7485c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2557ac",
  "rgb": {
    "r": 37,
    "g": 87,
    "b": 172
  },
  "hsl": {
    "h": 217.778,
    "s": 64.593,
    "l": 40.98
  },
  "oklch": {
    "l": 0.47178,
    "c": 0.14664,
    "h": 260.3
  },
  "luminance": 0.10188
}

Semantic roles & 50–950 ramp

primary

#2557AC

secondary

#C6A367

accent

#AA40E8

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2557AC

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

Preview Lab → · Contrast checker → · Palette generator →