#2A51BC#2A51BC

#2A51BC is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.4% C 0.174 H 265.1°. Best body text is #FFFFFF at 7.00:1 contrast (WCAG AA passes).

Color values

HEX	#2A51BC
RGB	rgb(42, 81, 188)
HSL	hsl(224, 63%, 45%)
HSV	hsv(224, 78%, 74%)
CMYK	cmyk(77.7%, 56.9%, 0%, 26.3%)
CIE-LAB	lab(37.85, 25.30, -60.22)
CIE-LCH	lch(37.85, 65.32, 292.78°)
OKLab	oklab(47.35% -0.0149 -0.1738)
OKLCH	oklch(47.35% 0.174 265.1)
XYZ	xyz(12.9712, 10.0065, 48.8150)
Luminance	0.1001 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A51BC #BC952A

analogous

#2A9ABC #2A51BC #4C2ABC

triadic

#2A51BC #BC2A51 #51BC2A

tetradic

#2A51BC #BC2A9A #BC952A #2ABC4C

square

#2A51BC #BC2A9A #BC952A #2ABC4C

split-complementary

#2A51BC #BC4C2A #9ABC2A

monochromatic

#142658 #1F3B8A #2A51BC #4C71D7 #7E99E2

Accessibility & contrast

On white

7.00

#2A51BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

3.00

#2A51BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2A51BC

7.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A51BC	#FFFFFF	#000000	##FFFFFF
##2A51BC	1.00	7.00	3.00	7.00
#FFFFFF	7.00	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	7.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C0

Deuteranopia (green-blind)

#0053BA

Tritanopia (blue-blind)

#006C7E

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #2a51bc;
/* rgb */ color: rgb(42, 81, 188);
/* oklch */ color: oklch(47.4% 0.174 265.1);

Tailwind

colors: {
  custom: {
    50: '#7a81d1',
    500: '#2a51bc',
    950: '#000000',
  },
}

SCSS

$custom: #2a51bc;
$custom-light: #7a81d1;
$custom-dark: #000000;

JSON

{
  "hex": "#2a51bc",
  "rgb": {
    "r": 42,
    "g": 81,
    "b": 188
  },
  "hsl": {
    "h": 223.973,
    "s": 63.478,
    "l": 45.098
  },
  "oklch": {
    "l": 0.47351,
    "c": 0.17447,
    "h": 265.1
  },
  "luminance": 0.10008
}

Semantic roles & 50–950 ramp

primary

#2A51BC

secondary

#CBB477

accent

#BA41E7

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #2A51BC

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

Preview Lab → · Contrast checker → · Palette generator →