#2151CA#2151CA

#2151CA is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.2% C 0.195 H 264.0°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#2151CA
RGB	rgb(33, 81, 202)
HSL	hsl(223, 72%, 46%)
HSV	hsv(223, 84%, 79%)
CMYK	cmyk(83.7%, 59.9%, 0%, 20.8%)
CIE-LAB	lab(38.67, 29.81, -67.05)
CIE-LCH	lch(38.67, 73.38, 293.97°)
OKLab	oklab(48.23% -0.0205 -0.194)
OKLCH	oklch(48.23% 0.195 264)
XYZ	xyz(14.2265, 10.4707, 57.1369)
Luminance	0.1047 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2151CA #CA9A21

analogous

#21A5CA #2151CA #4621CA

triadic

#2151CA #CA2151 #51CA21

tetradic

#2151CA #CA21A5 #CA9A21 #21CA46

square

#2151CA #CA21A5 #CA9A21 #21CA46

split-complementary

#2151CA #CA4621 #A5CA21

monochromatic

#102761 #183C95 #2151CA #4773E1 #7C9BEA

Accessibility & contrast

On white

6.79

#2151CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#2151CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2151CA

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2151CA	#FFFFFF	#000000	##FFFFFF
##2151CA	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CE

Deuteranopia (green-blind)

#0054C8

Tritanopia (blue-blind)

#007085

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2151ca;
/* rgb */ color: rgb(33, 81, 202);
/* oklch */ color: oklch(48.2% 0.195 264.0);

Tailwind

colors: {
  custom: {
    50: '#7b81db',
    500: '#2151ca',
    950: '#000000',
  },
}

SCSS

$custom: #2151ca;
$custom-light: #7b81db;
$custom-dark: #000000;

JSON

{
  "hex": "#2151ca",
  "rgb": {
    "r": 33,
    "g": 81,
    "b": 202
  },
  "hsl": {
    "h": 222.959,
    "s": 71.915,
    "l": 46.078
  },
  "oklch": {
    "l": 0.48231,
    "c": 0.19511,
    "h": 264
  },
  "luminance": 0.10472
}

Semantic roles & 50–950 ramp

primary

#2151CA

secondary

#D2B775

accent

#BB39EF

background

#F8F7FD

surface

#EFEEFB

border

#CAC9D4

text

#0B0A15

muted

#7C7C83

Preview Lab

Preview with #2151CA

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

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