#2A55B9#2A55B9

#2A55B9 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.9% C 0.166 H 263.7°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#2A55B9
RGB	rgb(42, 85, 185)
HSL	hsl(222, 63%, 45%)
HSV	hsv(222, 77%, 73%)
CMYK	cmyk(77.3%, 54.1%, 0%, 27.5%)
CIE-LAB	lab(38.71, 21.52, -57.07)
CIE-LCH	lch(38.71, 60.99, 290.66°)
OKLab	oklab(47.93% -0.018 -0.1645)
OKLCH	oklch(47.93% 0.166 263.7)
XYZ	xyz(12.9572, 10.4905, 47.2315)
Luminance	0.1049 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A55B9 #B98E2A

analogous

#2A9DB9 #2A55B9 #462AB9

triadic

#2A55B9 #B92A55 #55B92A

tetradic

#2A55B9 #B92A9D #B98E2A #2AB946

square

#2A55B9 #B92A9D #B98E2A #2AB946

split-complementary

#2A55B9 #B9462A #9DB92A

monochromatic

#132755 #1F3E87 #2A55B9 #4A74D6 #7C9BE1

Accessibility & contrast

On white

6.78

#2A55B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#2A55B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2A55B9

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A55B9	#FFFFFF	#000000	##FFFFFF
##2A55B9	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062BD

Deuteranopia (green-blind)

#0055B7

Tritanopia (blue-blind)

#006D7E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2a55b9;
/* rgb */ color: rgb(42, 85, 185);
/* oklch */ color: oklch(47.9% 0.166 263.7);

Tailwind

colors: {
  custom: {
    50: '#7984cf',
    500: '#2a55b9',
    950: '#000000',
  },
}

SCSS

$custom: #2a55b9;
$custom-light: #7984cf;
$custom-dark: #000000;

JSON

{
  "hex": "#2a55b9",
  "rgb": {
    "r": 42,
    "g": 85,
    "b": 185
  },
  "hsl": {
    "h": 221.958,
    "s": 62.996,
    "l": 44.51
  },
  "oklch": {
    "l": 0.47925,
    "c": 0.1655,
    "h": 263.7
  },
  "luminance": 0.10492
}

Semantic roles & 50–950 ramp

primary

#2A55B9

secondary

#CAB075

accent

#B542E6

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #2A55B9

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

Preview Lab → · Contrast checker → · Palette generator →