#2528B0#2528B0

#2528B0 is a dark, highly saturated blue. Relative luminance 0.050; OKLCH L 38.9% C 0.206 H 270.8°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#2528B0
RGB	rgb(37, 40, 176)
HSL	hsl(239, 65%, 42%)
HSV	hsv(239, 79%, 69%)
CMYK	cmyk(79%, 77.3%, 0%, 31%)
CIE-LAB	lab(26.86, 46.11, -71.16)
CIE-LCH	lch(26.86, 84.80, 302.94°)
OKLab	oklab(38.92% 0.0027 -0.2061)
OKLCH	oklch(38.92% 0.206 270.8)
XYZ	xyz(9.3556, 5.0444, 41.5465)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2528B0 #B0AD25

analogous

#256EB0 #2528B0 #6825B0

triadic

#2528B0 #B02528 #28B025

tetradic

#2528B0 #B0256E #B0AD25 #25B068

square

#2528B0 #B0256E #B0AD25 #25B068

split-complementary

#2528B0 #B06825 #6EB025

monochromatic

#10114B #1A1D7D #2528B0 #3C3FD6 #6F71E1

Accessibility & contrast

On white

10.45

#2528B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#2528B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2528B0

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2528B0	#FFFFFF	#000000	##FFFFFF
##2528B0	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046B4

Deuteranopia (green-blind)

#0038AE

Tritanopia (blue-blind)

#00516B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #2528b0;
/* rgb */ color: rgb(37, 40, 176);
/* oklch */ color: oklch(38.9% 0.206 270.8);

Tailwind

colors: {
  custom: {
    50: '#7964c9',
    500: '#2528b0',
    950: '#000000',
  },
}

SCSS

$custom: #2528b0;
$custom-light: #7964c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2528b0",
  "rgb": {
    "r": 37,
    "g": 40,
    "b": 176
  },
  "hsl": {
    "h": 238.705,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.38918,
    "c": 0.2061,
    "h": 270.8
  },
  "luminance": 0.05045
}

Semantic roles & 50–950 ramp

primary

#2528B0

secondary

#C7C56A

accent

#E540E8

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2528B0

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

Preview Lab → · Contrast checker → · Palette generator →