#2857B2#2857B2

#2857B2 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.7% C 0.154 H 261.9°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#2857B2
RGB	rgb(40, 87, 178)
HSL	hsl(220, 63%, 43%)
HSV	hsv(220, 78%, 70%)
CMYK	cmyk(77.5%, 51.1%, 0%, 30.2%)
CIE-LAB	lab(38.69, 17.28, -52.99)
CIE-LCH	lch(38.69, 55.74, 288.06°)
OKLab	oklab(47.73% -0.0217 -0.1525)
OKLCH	oklch(47.73% 0.154 261.9)
XYZ	xyz(12.3163, 10.4804, 43.4847)
Luminance	0.1048 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2857B2 #B28328

analogous

#289CB2 #2857B2 #3E28B2

triadic

#2857B2 #B22857 #57B228

tetradic

#2857B2 #B2289C #B28328 #28B23E

square

#2857B2 #B2289C #B28328 #28B23E

split-complementary

#2857B2 #B23E28 #9CB228

monochromatic

#12264E #1D3F80 #2857B2 #4374D5 #7599E0

Accessibility & contrast

On white

6.78

#2857B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#2857B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2857B2

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2857B2	#FFFFFF	#000000	##FFFFFF
##2857B2	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)

#1D62B5

Deuteranopia (green-blind)

#0055B0

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2857b2;
/* rgb */ color: rgb(40, 87, 178);
/* oklch */ color: oklch(47.7% 0.154 261.9);

Tailwind

colors: {
  custom: {
    50: '#7785ca',
    500: '#2857b2',
    950: '#000000',
  },
}

SCSS

$custom: #2857b2;
$custom-light: #7785ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2857b2",
  "rgb": {
    "r": 40,
    "g": 87,
    "b": 178
  },
  "hsl": {
    "h": 219.565,
    "s": 63.303,
    "l": 42.745
  },
  "oklch": {
    "l": 0.47732,
    "c": 0.15402,
    "h": 261.9
  },
  "luminance": 0.10482
}

Semantic roles & 50–950 ramp

primary

#2857B2

secondary

#C7A96F

accent

#AE41E6

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2857B2

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

Preview Lab → · Contrast checker → · Palette generator →