#2B57BC#2B57BC

#2B57BC is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.6% C 0.167 H 263.6°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#2B57BC
RGB	rgb(43, 87, 188)
HSL	hsl(222, 63%, 45%)
HSV	hsv(222, 77%, 74%)
CMYK	cmyk(77.1%, 53.7%, 0%, 26.3%)
CIE-LAB	lab(39.51, 21.46, -57.53)
CIE-LCH	lch(39.51, 61.40, 290.46°)
OKLab	oklab(48.61% -0.0185 -0.1658)
OKLCH	oklch(48.61% 0.167 263.6)
XYZ	xyz(13.4783, 10.9593, 48.9722)
Luminance	0.1096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B57BC #BC902B

analogous

#2BA0BC #2B57BC #472BBC

triadic

#2B57BC #BC2B57 #57BC2B

tetradic

#2B57BC #BC2BA0 #BC902B #2BBC47

square

#2B57BC #BC2BA0 #BC902B #2BBC47

split-complementary

#2B57BC #BC472B #A0BC2B

monochromatic

#142958 #20408A #2B57BC #4E77D6 #809DE2

Accessibility & contrast

On white

6.58

#2B57BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#2B57BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2B57BC

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B57BC	#FFFFFF	#000000	##FFFFFF
##2B57BC	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0364C0

Deuteranopia (green-blind)

#0057BA

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2b57bc;
/* rgb */ color: rgb(43, 87, 188);
/* oklch */ color: oklch(48.6% 0.167 263.6);

Tailwind

colors: {
  custom: {
    50: '#7a85d1',
    500: '#2b57bc',
    950: '#000000',
  },
}

SCSS

$custom: #2b57bc;
$custom-light: #7a85d1;
$custom-dark: #000000;

JSON

{
  "hex": "#2b57bc",
  "rgb": {
    "r": 43,
    "g": 87,
    "b": 188
  },
  "hsl": {
    "h": 221.793,
    "s": 62.771,
    "l": 45.294
  },
  "oklch": {
    "l": 0.48613,
    "c": 0.16682,
    "h": 263.6
  },
  "luminance": 0.10961
}

Semantic roles & 50–950 ramp

primary

#2B57BC

secondary

#CBB278

accent

#B442E6

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #2B57BC

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

Preview Lab → · Contrast checker → · Palette generator →