#2537AE#2537AE

#2537AE is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.0% C 0.188 H 269.0°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#2537AE
RGB	rgb(37, 55, 174)
HSL	hsl(232, 65%, 41%)
HSV	hsv(232, 79%, 68%)
CMYK	cmyk(78.7%, 68.4%, 0%, 31.8%)
CIE-LAB	lab(29.86, 36.50, -65.01)
CIE-LCH	lch(29.86, 74.56, 299.31°)
OKLab	oklab(41.01% -0.0033 -0.1882)
OKLCH	oklch(41.01% 0.188 269)
XYZ	xyz(9.7665, 6.1806, 40.7144)
Luminance	0.0618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.70

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2537AE #AE9C25

analogous

#257CAE #2537AE #5825AE

triadic

#2537AE #AE2537 #37AE25

tetradic

#2537AE #AE257C #AE9C25 #25AE58

square

#2537AE #AE257C #AE9C25 #25AE58

split-complementary

#2537AE #AE5825 #7CAE25

monochromatic

#101749 #1A277C #2537AE #3B4FD5 #6D7CE0

Accessibility & contrast

On white

9.39

#2537AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#2537AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2537AE

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2537AE	#FFFFFF	#000000	##FFFFFF
##2537AE	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB2

Deuteranopia (green-blind)

#0040AC

Tritanopia (blue-blind)

#00586E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2537ae;
/* rgb */ color: rgb(37, 55, 174);
/* oklch */ color: oklch(41.0% 0.188 269.0);

Tailwind

colors: {
  custom: {
    50: '#776ec7',
    500: '#2537ae',
    950: '#000000',
  },
}

SCSS

$custom: #2537ae;
$custom-light: #776ec7;
$custom-dark: #000000;

JSON

{
  "hex": "#2537ae",
  "rgb": {
    "r": 37,
    "g": 55,
    "b": 174
  },
  "hsl": {
    "h": 232.117,
    "s": 64.929,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41007,
    "c": 0.18827,
    "h": 269
  },
  "luminance": 0.06182
}

Semantic roles & 50–950 ramp

primary

#2537AE

secondary

#C6BA68

accent

#D240E8

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2537AE

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

Preview Lab → · Contrast checker → · Palette generator →