#2857B1#2857B1

#2857B1 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.7% C 0.153 H 261.8°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#2857B1
RGB	rgb(40, 87, 177)
HSL	hsl(219, 63%, 43%)
HSV	hsv(219, 77%, 69%)
CMYK	cmyk(77.4%, 50.8%, 0%, 30.6%)
CIE-LAB	lab(38.62, 16.89, -52.51)
CIE-LCH	lch(38.62, 55.16, 287.83°)
OKLab	oklab(47.66% -0.0219 -0.1511)
OKLCH	oklch(47.66% 0.153 261.8)
XYZ	xyz(12.2162, 10.4404, 42.9578)
Luminance	0.1044 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2857B1 #B18228

analogous

#289CB1 #2857B1 #3D28B1

triadic

#2857B1 #B12857 #57B128

tetradic

#2857B1 #B1289C #B18228 #28B13D

square

#2857B1 #B1289C #B18228 #28B13D

split-complementary

#2857B1 #B13D28 #9CB128

monochromatic

#11264D #1D3E7F #2857B1 #4274D4 #7499E0

Accessibility & contrast

On white

6.80

#2857B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#2857B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2857B1

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2857B1	#FFFFFF	#000000	##FFFFFF
##2857B1	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F62B4

Deuteranopia (green-blind)

#0055AF

Tritanopia (blue-blind)

#006D7B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2857b1;
/* rgb */ color: rgb(40, 87, 177);
/* oklch */ color: oklch(47.7% 0.153 261.8);

Tailwind

colors: {
  custom: {
    50: '#7785c9',
    500: '#2857b1',
    950: '#000000',
  },
}

SCSS

$custom: #2857b1;
$custom-light: #7785c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2857b1",
  "rgb": {
    "r": 40,
    "g": 87,
    "b": 177
  },
  "hsl": {
    "h": 219.416,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.47657,
    "c": 0.15265,
    "h": 261.8
  },
  "luminance": 0.10442
}

Semantic roles & 50–950 ramp

primary

#2857B1

secondary

#C7A86E

accent

#AE42E6

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2857B1

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

Preview Lab → · Contrast checker → · Palette generator →