#2357BB#2357BB

#2357BB is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.3% C 0.168 H 261.8°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#2357BB
RGB	rgb(35, 87, 187)
HSL	hsl(219, 68%, 44%)
HSV	hsv(219, 81%, 73%)
CMYK	cmyk(81.3%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(39.17, 20.25, -57.50)
CIE-LCH	lch(39.17, 60.96, 289.40°)
OKLab	oklab(48.26% -0.024 -0.1658)
OKLCH	oklch(48.26% 0.168 261.8)
XYZ	xyz(13.0677, 10.7600, 48.3922)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2357BB #BB8723

analogous

#23A3BB #2357BB #3B23BB

triadic

#2357BB #BB2357 #57BB23

tetradic

#2357BB #BB23A3 #BB8723 #23BB3B

square

#2357BB #BB23A3 #BB8723 #23BB3B

split-complementary

#2357BB #BB3B23 #A3BB23

monochromatic

#102754 #193F87 #2357BB #4075DB #749AE5

Accessibility & contrast

On white

6.66

#2357BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#2357BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2357BB

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2357BB	#FFFFFF	#000000	##FFFFFF
##2357BB	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0464BF

Deuteranopia (green-blind)

#0056B9

Tritanopia (blue-blind)

#007080

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2357bb;
/* rgb */ color: rgb(35, 87, 187);
/* oklch */ color: oklch(48.3% 0.168 261.8);

Tailwind

colors: {
  custom: {
    50: '#7785d0',
    500: '#2357bb',
    950: '#000000',
  },
}

SCSS

$custom: #2357bb;
$custom-light: #7785d0;
$custom-dark: #000000;

JSON

{
  "hex": "#2357bb",
  "rgb": {
    "r": 35,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 219.474,
    "s": 68.468,
    "l": 43.529
  },
  "oklch": {
    "l": 0.48258,
    "c": 0.16757,
    "h": 261.8
  },
  "luminance": 0.10762
}

Semantic roles & 50–950 ramp

primary

#2357BB

secondary

#CCAC6E

accent

#B03CEB

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0A0B14

muted

#7C7C82

Preview Lab

Preview with #2357BB

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

Preview Lab → · Contrast checker → · Palette generator →