#2545B3#2545B3

#2545B3 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.0% C 0.178 H 266.4°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#2545B3
RGB	rgb(37, 69, 179)
HSL	hsl(226, 66%, 42%)
HSV	hsv(226, 79%, 70%)
CMYK	cmyk(79.3%, 61.5%, 0%, 29.8%)
CIE-LAB	lab(33.78, 29.28, -61.57)
CIE-LCH	lch(33.78, 68.17, 295.43°)
OKLab	oklab(44.03% -0.0113 -0.1781)
OKLCH	oklch(44.03% 0.178 266.4)
XYZ	xyz(11.0249, 7.9030, 43.5835)
Luminance	0.0790 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2545B3 #B39325

analogous

#258CB3 #2545B3 #4C25B3

triadic

#2545B3 #B32545 #45B325

tetradic

#2545B3 #B3258C #B39325 #25B34C

square

#2545B3 #B3258C #B39325 #25B34C

split-complementary

#2545B3 #B34C25 #8CB325

monochromatic

#101E4E #1B3180 #2545B3 #3E61D7 #718AE2

Accessibility & contrast

On white

8.14

#2545B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#2545B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2545B3

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2545B3	#FFFFFF	#000000	##FFFFFF
##2545B3	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B7

Deuteranopia (green-blind)

#0049B1

Tritanopia (blue-blind)

#006175

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2545b3;
/* rgb */ color: rgb(37, 69, 179);
/* oklch */ color: oklch(44.0% 0.178 266.4);

Tailwind

colors: {
  custom: {
    50: '#7778cb',
    500: '#2545b3',
    950: '#000000',
  },
}

SCSS

$custom: #2545b3;
$custom-light: #7778cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2545b3",
  "rgb": {
    "r": 37,
    "g": 69,
    "b": 179
  },
  "hsl": {
    "h": 226.479,
    "s": 65.741,
    "l": 42.353
  },
  "oklch": {
    "l": 0.44025,
    "c": 0.17841,
    "h": 266.4
  },
  "luminance": 0.07904
}

Semantic roles & 50–950 ramp

primary

#2545B3

secondary

#C8B36B

accent

#C23FE9

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #2545B3

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

Preview Lab → · Contrast checker → · Palette generator →