#2545B4#2545B4

#2545B4 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.1% C 0.180 H 266.4°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#2545B4
RGB	rgb(37, 69, 180)
HSL	hsl(227, 66%, 43%)
HSV	hsv(227, 79%, 71%)
CMYK	cmyk(79.4%, 61.7%, 0%, 29.4%)
CIE-LAB	lab(33.87, 29.66, -62.02)
CIE-LCH	lch(33.87, 68.75, 295.56°)
OKLab	oklab(44.11% -0.0113 -0.1794)
OKLCH	oklch(44.11% 0.18 266.4)
XYZ	xyz(11.1264, 7.9436, 44.1180)
Luminance	0.0795 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2545B4 #B49425

analogous

#258DB4 #2545B4 #4C25B4

triadic

#2545B4 #B42545 #45B425

tetradic

#2545B4 #B4258D #B49425 #25B44C

square

#2545B4 #B4258D #B49425 #25B44C

split-complementary

#2545B4 #B44C25 #8DB425

monochromatic

#101E4E #1B3281 #2545B4 #3F61D7 #718BE2

Accessibility & contrast

On white

8.11

#2545B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#2545B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2545B4

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2545B4	#FFFFFF	#000000	##FFFFFF
##2545B4	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B8

Deuteranopia (green-blind)

#0049B2

Tritanopia (blue-blind)

#006276

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #2545b4;
/* rgb */ color: rgb(37, 69, 180);
/* oklch */ color: oklch(44.1% 0.180 266.4);

Tailwind

colors: {
  custom: {
    50: '#7778cb',
    500: '#2545b4',
    950: '#000000',
  },
}

SCSS

$custom: #2545b4;
$custom-light: #7778cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2545b4",
  "rgb": {
    "r": 37,
    "g": 69,
    "b": 180
  },
  "hsl": {
    "h": 226.573,
    "s": 65.899,
    "l": 42.549
  },
  "oklch": {
    "l": 0.44114,
    "c": 0.17972,
    "h": 266.4
  },
  "luminance": 0.07945
}

Semantic roles & 50–950 ramp

primary

#2545B4

secondary

#C9B46C

accent

#C33FE9

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #2545B4

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

Preview Lab → · Contrast checker → · Palette generator →