#2537BC#2537BC

#2537BC is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.4% C 0.206 H 268.7°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#2537BC
RGB	rgb(37, 55, 188)
HSL	hsl(233, 67%, 44%)
HSV	hsv(233, 80%, 74%)
CMYK	cmyk(80.3%, 70.7%, 0%, 26.3%)
CIE-LAB	lab(31.24, 41.52, -71.06)
CIE-LCH	lch(31.24, 82.30, 300.30°)
OKLab	oklab(42.42% -0.0046 -0.2059)
OKLCH	oklch(42.42% 0.206 268.7)
XYZ	xyz(11.2031, 6.7552, 48.2806)
Luminance	0.0676 (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

#2537BC #BCAA25

analogous

#2583BC #2537BC #5F25BC

triadic

#2537BC #BC2537 #37BC25

tetradic

#2537BC #BC2583 #BCAA25 #25BC5F

square

#2537BC #BC2583 #BCAA25 #25BC5F

split-complementary

#2537BC #BC5F25 #83BC25

monochromatic

#111956 #1B2889 #2537BC #4456DA #7784E4

Accessibility & contrast

On white

8.93

#2537BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#2537BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2537BC

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2537BC	#FFFFFF	#000000	##FFFFFF
##2537BC	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051C0

Deuteranopia (green-blind)

#0042BA

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2537bc;
/* rgb */ color: rgb(37, 55, 188);
/* oklch */ color: oklch(42.4% 0.206 268.7);

Tailwind

colors: {
  custom: {
    50: '#7b6ed1',
    500: '#2537bc',
    950: '#000000',
  },
}

SCSS

$custom: #2537bc;
$custom-light: #7b6ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#2537bc",
  "rgb": {
    "r": 37,
    "g": 55,
    "b": 188
  },
  "hsl": {
    "h": 232.848,
    "s": 67.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42421,
    "c": 0.20591,
    "h": 268.7
  },
  "luminance": 0.06757
}

Semantic roles & 50–950 ramp

primary

#2537BC

secondary

#CCC171

accent

#D53EEA

background

#F8F6FD

surface

#EFECFA

border

#CAC7D3

text

#0B0714

muted

#7C7A83

Preview Lab

Preview with #2537BC

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

Preview Lab → · Contrast checker → · Palette generator →