#2557AA#2557AA

#2557AA is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.0% C 0.144 H 260.0°. Best body text is #FFFFFF at 6.95:1 contrast (WCAG AA passes).

Color values

HEX	#2557AA
RGB	rgb(37, 87, 170)
HSL	hsl(217, 64%, 41%)
HSV	hsv(217, 78%, 67%)
CMYK	cmyk(78.2%, 48.8%, 0%, 33.3%)
CIE-LAB	lab(38.04, 13.82, -49.31)
CIE-LCH	lch(38.04, 51.21, 285.66°)
OKLab	oklab(47.03% -0.0249 -0.1417)
OKLCH	oklch(47.03% 0.144 260)
XYZ	xyz(11.4242, 10.1107, 39.3719)
Luminance	0.1011 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2557AA #AA7825

analogous

#2599AA #2557AA #3625AA

triadic

#2557AA #AA2557 #57AA25

tetradic

#2557AA #AA2599 #AA7825 #25AA36

square

#2557AA #AA2599 #AA7825 #25AA36

split-complementary

#2557AA #AA3625 #99AA25

monochromatic

#0F2445 #1A3D78 #2557AA #3873D4 #6B96DF

Accessibility & contrast

On white

6.95

#2557AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#2557AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2557AA

6.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2557AA	#FFFFFF	#000000	##FFFFFF
##2557AA	1.00	6.95	3.02	6.95
#FFFFFF	6.95	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2860AD

Deuteranopia (green-blind)

#0054A8

Tritanopia (blue-blind)

#006B78

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2557aa;
/* rgb */ color: rgb(37, 87, 170);
/* oklch */ color: oklch(47.0% 0.144 260.0);

Tailwind

colors: {
  custom: {
    50: '#7485c4',
    500: '#2557aa',
    950: '#000000',
  },
}

SCSS

$custom: #2557aa;
$custom-light: #7485c4;
$custom-dark: #000000;

JSON

{
  "hex": "#2557aa",
  "rgb": {
    "r": 37,
    "g": 87,
    "b": 170
  },
  "hsl": {
    "h": 217.444,
    "s": 64.251,
    "l": 40.588
  },
  "oklch": {
    "l": 0.4703,
    "c": 0.14388,
    "h": 260
  },
  "luminance": 0.10112
}

Semantic roles & 50–950 ramp

primary

#2557AA

secondary

#C5A166

accent

#A941E7

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #2557AA

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

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