#2D57B8#2D57B8

#2D57B8 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.4% C 0.161 H 263.8°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#2D57B8
RGB	rgb(45, 87, 184)
HSL	hsl(222, 61%, 45%)
HSV	hsv(222, 76%, 72%)
CMYK	cmyk(75.5%, 52.7%, 0%, 27.8%)
CIE-LAB	lab(39.30, 20.17, -55.53)
CIE-LCH	lch(39.30, 59.08, 289.97°)
OKLab	oklab(48.38% -0.0174 -0.1599)
OKLCH	oklch(48.38% 0.161 263.8)
XYZ	xyz(13.1390, 10.8335, 46.7367)
Luminance	0.1084 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2D57B8 #B88E2D

analogous

#2D9CB8 #2D57B8 #492DB8

triadic

#2D57B8 #B82D57 #57B82D

tetradic

#2D57B8 #B82D9C #B88E2D #2DB849

square

#2D57B8 #B82D9C #B88E2D #2DB849

split-complementary

#2D57B8 #B8492D #9CB82D

monochromatic

#152856 #214087 #2D57B8 #4E77D4 #809DE0

Accessibility & contrast

On white

6.63

#2D57B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#2D57B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2D57B8

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2D57B8	#FFFFFF	#000000	##FFFFFF
##2D57B8	1.00	6.63	3.17	6.63
#FFFFFF	6.63	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1263BB

Deuteranopia (green-blind)

#0056B6

Tritanopia (blue-blind)

#006E7F

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2d57b8;
/* rgb */ color: rgb(45, 87, 184);
/* oklch */ color: oklch(48.4% 0.161 263.8);

Tailwind

colors: {
  custom: {
    50: '#7a85ce',
    500: '#2d57b8',
    950: '#000000',
  },
}

SCSS

$custom: #2d57b8;
$custom-light: #7a85ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2d57b8",
  "rgb": {
    "r": 45,
    "g": 87,
    "b": 184
  },
  "hsl": {
    "h": 221.871,
    "s": 60.699,
    "l": 44.902
  },
  "oklch": {
    "l": 0.48381,
    "c": 0.16081,
    "h": 263.8
  },
  "luminance": 0.10835
}

Semantic roles & 50–950 ramp

primary

#2D57B8

secondary

#C9B078

accent

#B444E4

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #2D57B8

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

Preview Lab → · Contrast checker → · Palette generator →