#2537BD#2537BD

#2537BD is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.5% C 0.207 H 268.7°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#2537BD
RGB	rgb(37, 55, 189)
HSL	hsl(233, 67%, 44%)
HSV	hsv(233, 80%, 74%)
CMYK	cmyk(80.4%, 70.9%, 0%, 25.9%)
CIE-LAB	lab(31.34, 41.87, -71.48)
CIE-LCH	lch(31.34, 82.84, 300.36°)
OKLab	oklab(42.52% -0.0047 -0.2071)
OKLCH	oklch(42.52% 0.207 268.7)
XYZ	xyz(11.3113, 6.7985, 48.8503)
Luminance	0.0680 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2537BD #BDAB25

analogous

#2583BD #2537BD #5F25BD

triadic

#2537BD #BD2537 #37BD25

tetradic

#2537BD #BD2583 #BDAB25 #25BD5F

square

#2537BD #BD2583 #BDAB25 #25BD5F

split-complementary

#2537BD #BD5F25 #83BD25

monochromatic

#111957 #1B288A #2537BD #4556DB #7885E5

Accessibility & contrast

On white

8.90

#2537BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#2537BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2537BD

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2537BD	#FFFFFF	#000000	##FFFFFF
##2537BD	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051C1

Deuteranopia (green-blind)

#0042BB

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2537bd;
/* rgb */ color: rgb(37, 55, 189);
/* oklch */ color: oklch(42.5% 0.207 268.7);

Tailwind

colors: {
  custom: {
    50: '#7b6ed2',
    500: '#2537bd',
    950: '#000000',
  },
}

SCSS

$custom: #2537bd;
$custom-light: #7b6ed2;
$custom-dark: #000000;

JSON

{
  "hex": "#2537bd",
  "rgb": {
    "r": 37,
    "g": 55,
    "b": 189
  },
  "hsl": {
    "h": 232.895,
    "s": 67.257,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42523,
    "c": 0.20715,
    "h": 268.7
  },
  "luminance": 0.068
}

Semantic roles & 50–950 ramp

primary

#2537BD

secondary

#CCC172

accent

#D63EEA

background

#F8F6FD

surface

#EFECFA

border

#CAC7D3

text

#0B0714

muted

#7C7A83

Preview Lab

Preview with #2537BD

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

Preview Lab → · Contrast checker → · Palette generator →