#2557D0#2557D0

#2557D0 is a mid, vivid blue. Relative luminance 0.118; OKLCH L 50.0% C 0.195 H 263.7°. Best body text is #FFFFFF at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#2557D0
RGB	rgb(37, 87, 208)
HSL	hsl(222, 70%, 48%)
HSV	hsv(222, 82%, 82%)
CMYK	cmyk(82.2%, 58.2%, 0%, 18.4%)
CIE-LAB	lab(40.84, 28.50, -66.98)
CIE-LCH	lch(40.84, 72.79, 293.05°)
OKLab	oklab(50.03% -0.0212 -0.1937)
OKLCH	oklch(50.03% 0.195 263.7)
XYZ	xyz(15.5522, 11.7619, 61.1129)
Luminance	0.1176 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2557D0 #D09E25

analogous

#25ACD0 #2557D0 #4825D0

triadic

#2557D0 #D02557 #57D025

tetradic

#2557D0 #D025AC #D09E25 #25D048

square

#2557D0 #D025AC #D09E25 #25D048

split-complementary

#2557D0 #D04825 #ACD025

monochromatic

#132C68 #1C419C #2557D0 #527CE0 #86A3E9

Accessibility & contrast

On white

6.26

#2557D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#2557D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2557D0

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2557D0	#FFFFFF	#000000	##FFFFFF
##2557D0	1.00	6.26	3.35	6.26
#FFFFFF	6.26	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D4

Deuteranopia (green-blind)

#0059CE

Tritanopia (blue-blind)

#00768B

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #2557d0;
/* rgb */ color: rgb(37, 87, 208);
/* oklch */ color: oklch(50.0% 0.195 263.7);

Tailwind

colors: {
  custom: {
    50: '#7d85df',
    500: '#2557d0',
    950: '#000000',
  },
}

SCSS

$custom: #2557d0;
$custom-light: #7d85df;
$custom-dark: #000000;

JSON

{
  "hex": "#2557d0",
  "rgb": {
    "r": 37,
    "g": 87,
    "b": 208
  },
  "hsl": {
    "h": 222.456,
    "s": 69.796,
    "l": 48.039
  },
  "oklch": {
    "l": 0.50032,
    "c": 0.19483,
    "h": 263.7
  },
  "luminance": 0.11764
}

Semantic roles & 50–950 ramp

primary

#2557D0

secondary

#D3BA7E

accent

#B93BED

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #2557D0

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

Preview Lab → · Contrast checker → · Palette generator →