#2D57B7#2D57B7

#2D57B7 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.3% C 0.159 H 263.7°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#2D57B7
RGB	rgb(45, 87, 183)
HSL	hsl(222, 61%, 45%)
HSV	hsv(222, 75%, 72%)
CMYK	cmyk(75.4%, 52.5%, 0%, 28.2%)
CIE-LAB	lab(39.23, 19.79, -55.05)
CIE-LCH	lch(39.23, 58.50, 289.78°)
OKLab	oklab(48.3% -0.0175 -0.1585)
OKLCH	oklch(48.3% 0.159 263.7)
XYZ	xyz(13.0346, 10.7917, 46.1866)
Luminance	0.1079 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2D57B7 #B78D2D

analogous

#2D9CB7 #2D57B7 #482DB7

triadic

#2D57B7 #B72D57 #57B72D

tetradic

#2D57B7 #B72D9C #B78D2D #2DB748

square

#2D57B7 #B72D9C #B78D2D #2DB748

split-complementary

#2D57B7 #B7482D #9CB72D

monochromatic

#152855 #214086 #2D57B7 #4E76D3 #7F9CDF

Accessibility & contrast

On white

6.65

#2D57B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#2D57B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2D57B7

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2D57B7	#FFFFFF	#000000	##FFFFFF
##2D57B7	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1563BA

Deuteranopia (green-blind)

#0056B5

Tritanopia (blue-blind)

#006E7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2d57b7;
/* rgb */ color: rgb(45, 87, 183);
/* oklch */ color: oklch(48.3% 0.159 263.7);

Tailwind

colors: {
  custom: {
    50: '#7a85cd',
    500: '#2d57b7',
    950: '#000000',
  },
}

SCSS

$custom: #2d57b7;
$custom-light: #7a85cd;
$custom-dark: #000000;

JSON

{
  "hex": "#2d57b7",
  "rgb": {
    "r": 45,
    "g": 87,
    "b": 183
  },
  "hsl": {
    "h": 221.739,
    "s": 60.526,
    "l": 44.706
  },
  "oklch": {
    "l": 0.48304,
    "c": 0.15944,
    "h": 263.7
  },
  "luminance": 0.10793
}

Semantic roles & 50–950 ramp

primary

#2D57B7

secondary

#C8B078

accent

#B344E4

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #2D57B7

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

Preview Lab → · Contrast checker → · Palette generator →