#2537A5#2537A5

#2537A5 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.1% C 0.177 H 269.1°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#2537A5
RGB	rgb(37, 55, 165)
HSL	hsl(232, 63%, 40%)
HSV	hsv(232, 78%, 65%)
CMYK	cmyk(77.6%, 66.7%, 0%, 35.3%)
CIE-LAB	lab(29.01, 33.20, -61.01)
CIE-LCH	lch(29.01, 69.46, 298.56°)
OKLab	oklab(40.12% -0.0026 -0.1766)
OKLCH	oklch(40.12% 0.177 269.1)
XYZ	xyz(8.9183, 5.8413, 36.2475)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2537A5 #A59325

analogous

#2577A5 #2537A5 #5325A5

triadic

#2537A5 #A52537 #37A525

tetradic

#2537A5 #A52577 #A59325 #25A553

square

#2537A5 #A52577 #A59325 #25A553

split-complementary

#2537A5 #A55325 #77A525

monochromatic

#0F1641 #1A2673 #2537A5 #354BD2 #6778DD

Accessibility & contrast

On white

9.68

#2537A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#2537A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2537A5

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2537A5	#FFFFFF	#000000	##FFFFFF
##2537A5	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA8

Deuteranopia (green-blind)

#003EA3

Tritanopia (blue-blind)

#005469

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2537a5;
/* rgb */ color: rgb(37, 55, 165);
/* oklch */ color: oklch(40.1% 0.177 269.1);

Tailwind

colors: {
  custom: {
    50: '#756ec1',
    500: '#2537a5',
    950: '#000000',
  },
}

SCSS

$custom: #2537a5;
$custom-light: #756ec1;
$custom-dark: #000000;

JSON

{
  "hex": "#2537a5",
  "rgb": {
    "r": 37,
    "g": 55,
    "b": 165
  },
  "hsl": {
    "h": 231.563,
    "s": 63.366,
    "l": 39.608
  },
  "oklch": {
    "l": 0.40123,
    "c": 0.17657,
    "h": 269.1
  },
  "luminance": 0.05842
}

Semantic roles & 50–950 ramp

primary

#2537A5

secondary

#C3B563

accent

#CF41E6

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2537A5

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

Preview Lab → · Contrast checker → · Palette generator →