#2557AE#2557AE

#2557AE is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.3% C 0.149 H 260.6°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#2557AE
RGB	rgb(37, 87, 174)
HSL	hsl(218, 65%, 41%)
HSV	hsv(218, 79%, 68%)
CMYK	cmyk(78.7%, 50%, 0%, 31.8%)
CIE-LAB	lab(38.31, 15.38, -51.24)
CIE-LCH	lch(38.31, 53.50, 286.71°)
OKLab	oklab(47.33% -0.0243 -0.1474)
OKLCH	oklch(47.33% 0.149 260.6)
XYZ	xyz(11.8084, 10.2643, 41.3951)
Luminance	0.1027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2557AE #AE7C25

analogous

#259CAE #2557AE #3825AE

triadic

#2557AE #AE2557 #57AE25

tetradic

#2557AE #AE259C #AE7C25 #25AE38

square

#2557AE #AE259C #AE7C25 #25AE38

split-complementary

#2557AE #AE3825 #9CAE25

monochromatic

#102549 #1A3E7C #2557AE #3B73D5 #6D97E0

Accessibility & contrast

On white

6.88

#2557AE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#2557AE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2557AE

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2557AE	#FFFFFF	#000000	##FFFFFF
##2557AE	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2361B1

Deuteranopia (green-blind)

#0054AC

Tritanopia (blue-blind)

#006C7A

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2557ae;
/* rgb */ color: rgb(37, 87, 174);
/* oklch */ color: oklch(47.3% 0.149 260.6);

Tailwind

colors: {
  custom: {
    50: '#7585c7',
    500: '#2557ae',
    950: '#000000',
  },
}

SCSS

$custom: #2557ae;
$custom-light: #7585c7;
$custom-dark: #000000;

JSON

{
  "hex": "#2557ae",
  "rgb": {
    "r": 37,
    "g": 87,
    "b": 174
  },
  "hsl": {
    "h": 218.102,
    "s": 64.929,
    "l": 41.373
  },
  "oklch": {
    "l": 0.47326,
    "c": 0.14938,
    "h": 260.6
  },
  "luminance": 0.10266
}

Semantic roles & 50–950 ramp

primary

#2557AE

secondary

#C6A468

accent

#AB40E8

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2557AE

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

Preview Lab → · Contrast checker → · Palette generator →