#2857B0#2857B0

#2857B0 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.6% C 0.151 H 261.6°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#2857B0
RGB	rgb(40, 87, 176)
HSL	hsl(219, 63%, 42%)
HSV	hsv(219, 77%, 69%)
CMYK	cmyk(77.3%, 50.6%, 0%, 31%)
CIE-LAB	lab(38.55, 16.51, -52.03)
CIE-LCH	lch(38.55, 54.59, 287.60°)
OKLab	oklab(47.58% -0.022 -0.1497)
OKLCH	oklch(47.58% 0.151 261.6)
XYZ	xyz(12.1169, 10.4007, 42.4348)
Luminance	0.1040 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2857B0 #B08128

analogous

#289BB0 #2857B0 #3D28B0

triadic

#2857B0 #B02857 #57B028

tetradic

#2857B0 #B0289B #B08128 #28B03D

square

#2857B0 #B0289B #B08128 #28B03D

split-complementary

#2857B0 #B03D28 #9BB028

monochromatic

#11264C #1D3E7E #2857B0 #4174D4 #7399DF

Accessibility & contrast

On white

6.82

#2857B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#2857B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2857B0

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2857B0	#FFFFFF	#000000	##FFFFFF
##2857B0	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2061B3

Deuteranopia (green-blind)

#0055AE

Tritanopia (blue-blind)

#006C7B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2857b0;
/* rgb */ color: rgb(40, 87, 176);
/* oklch */ color: oklch(47.6% 0.151 261.6);

Tailwind

colors: {
  custom: {
    50: '#7685c8',
    500: '#2857b0',
    950: '#000000',
  },
}

SCSS

$custom: #2857b0;
$custom-light: #7685c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2857b0",
  "rgb": {
    "r": 40,
    "g": 87,
    "b": 176
  },
  "hsl": {
    "h": 219.265,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.47582,
    "c": 0.15128,
    "h": 261.6
  },
  "luminance": 0.10402
}

Semantic roles & 50–950 ramp

primary

#2857B0

secondary

#C6A86D

accent

#AD42E6

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2857B0

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

Preview Lab → · Contrast checker → · Palette generator →