#2523BC#2523BC

#2523BC is a dark, highly saturated blue. Relative luminance 0.052; OKLCH L 39.7% C 0.224 H 270.4°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#2523BC
RGB	rgb(37, 35, 188)
HSL	hsl(241, 69%, 44%)
HSV	hsv(241, 81%, 74%)
CMYK	cmyk(80.3%, 81.4%, 0%, 26.3%)
CIE-LAB	lab(27.37, 52.52, -77.47)
CIE-LCH	lch(27.37, 93.59, 304.13°)
OKLab	oklab(39.67% 0.0017 -0.2243)
OKLCH	oklch(39.67% 0.224 270.4)
XYZ	xyz(10.4380, 5.2250, 48.0256)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2523BC #BABC23

analogous

#236DBC #2523BC #7123BC

triadic

#2523BC #BC2523 #23BC25

tetradic

#2523BC #BC236D #BABC23 #23BC71

square

#2523BC #BC236D #BABC23 #23BC71

split-complementary

#2523BC #BC7123 #6DBC23

monochromatic

#111055 #1B1988 #2523BC #4341DC #7674E5

Accessibility & contrast

On white

10.27

#2523BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#2523BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2523BC

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2523BC	#FFFFFF	#000000	##FFFFFF
##2523BC	1.00	10.27	2.05	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048C0

Deuteranopia (green-blind)

#0039B9

Tritanopia (blue-blind)

#005471

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2523bc;
/* rgb */ color: rgb(37, 35, 188);
/* oklch */ color: oklch(39.7% 0.224 270.4);

Tailwind

colors: {
  custom: {
    50: '#7d62d2',
    500: '#2523bc',
    950: '#000000',
  },
}

SCSS

$custom: #2523bc;
$custom-light: #7d62d2;
$custom-dark: #000000;

JSON

{
  "hex": "#2523bc",
  "rgb": {
    "r": 37,
    "g": 35,
    "b": 188
  },
  "hsl": {
    "h": 240.784,
    "s": 68.61,
    "l": 43.725
  },
  "oklch": {
    "l": 0.39674,
    "c": 0.22429,
    "h": 270.4
  },
  "luminance": 0.05226
}

Semantic roles & 50–950 ramp

primary

#2523BC

secondary

#CBCC6F

accent

#EB3CE9

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0514

muted

#7D7A83

Preview Lab

Preview with #2523BC

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

Preview Lab → · Contrast checker → · Palette generator →