#2537A0#2537A0

#2537A0 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.6% C 0.170 H 269.2°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#2537A0
RGB	rgb(37, 55, 160)
HSL	hsl(231, 62%, 39%)
HSV	hsv(231, 77%, 63%)
CMYK	cmyk(76.9%, 65.6%, 0%, 37.3%)
CIE-LAB	lab(28.55, 31.35, -58.75)
CIE-LCH	lch(28.55, 66.59, 298.08°)
OKLab	oklab(39.64% -0.0023 -0.1699)
OKLCH	oklch(39.64% 0.17 269.2)
XYZ	xyz(8.4721, 5.6628, 33.8974)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2537A0 #A08E25

analogous

#2574A0 #2537A0 #5025A0

triadic

#2537A0 #A02537 #37A025

tetradic

#2537A0 #A02574 #A08E25 #25A050

square

#2537A0 #A02574 #A08E25 #25A050

split-complementary

#2537A0 #A05025 #74A025

monochromatic

#0E153D #1A266E #2537A0 #3249D0 #6476DB

Accessibility & contrast

On white

9.85

#2537A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#2537A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2537A0

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2537A0	#FFFFFF	#000000	##FFFFFF
##2537A0	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A3

Deuteranopia (green-blind)

#003E9E

Tritanopia (blue-blind)

#005366

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2537a0;
/* rgb */ color: rgb(37, 55, 160);
/* oklch */ color: oklch(39.6% 0.170 269.2);

Tailwind

colors: {
  custom: {
    50: '#746dbd',
    500: '#2537a0',
    950: '#000000',
  },
}

SCSS

$custom: #2537a0;
$custom-light: #746dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#2537a0",
  "rgb": {
    "r": 37,
    "g": 55,
    "b": 160
  },
  "hsl": {
    "h": 231.22,
    "s": 62.437,
    "l": 38.627
  },
  "oklch": {
    "l": 0.39643,
    "c": 0.16995,
    "h": 269.2
  },
  "luminance": 0.05664
}

Semantic roles & 50–950 ramp

primary

#2537A0

secondary

#C1B360

accent

#CE42E6

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #2537A0

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

Preview Lab → · Contrast checker → · Palette generator →