#2351B4#2351B4

#2351B4 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.4% C 0.166 H 262.9°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#2351B4
RGB	rgb(35, 81, 180)
HSL	hsl(221, 67%, 42%)
HSV	hsv(221, 81%, 71%)
CMYK	cmyk(80.6%, 55%, 0%, 29.4%)
CIE-LAB	lab(37.00, 21.50, -56.92)
CIE-LCH	lch(37.00, 60.84, 290.69°)
OKLab	oklab(46.44% -0.0205 -0.1642)
OKLCH	oklch(46.44% 0.166 262.9)
XYZ	xyz(11.8708, 9.5361, 44.3862)
Luminance	0.0954 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2351B4 #B48623

analogous

#2399B4 #2351B4 #3E23B4

triadic

#2351B4 #B42351 #51B423

tetradic

#2351B4 #B42399 #B48623 #23B43E

square

#2351B4 #B42399 #B48623 #23B43E

split-complementary

#2351B4 #B43E23 #99B423

monochromatic

#0F234E #193A81 #2351B4 #3B6DD9 #6E93E3

Accessibility & contrast

On white

7.22

#2351B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#2351B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2351B4

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2351B4	#FFFFFF	#000000	##FFFFFF
##2351B4	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB7

Deuteranopia (green-blind)

#0051B2

Tritanopia (blue-blind)

#00697A

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #2351b4;
/* rgb */ color: rgb(35, 81, 180);
/* oklch */ color: oklch(46.4% 0.166 262.9);

Tailwind

colors: {
  custom: {
    50: '#7681cb',
    500: '#2351b4',
    950: '#000000',
  },
}

SCSS

$custom: #2351b4;
$custom-light: #7681cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2351b4",
  "rgb": {
    "r": 35,
    "g": 81,
    "b": 180
  },
  "hsl": {
    "h": 220.966,
    "s": 67.442,
    "l": 42.157
  },
  "oklch": {
    "l": 0.46443,
    "c": 0.16552,
    "h": 262.9
  },
  "luminance": 0.09537
}

Semantic roles & 50–950 ramp

primary

#2351B4

secondary

#C9AB69

accent

#B33DEA

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2351B4

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

Preview Lab → · Contrast checker → · Palette generator →