#4E51D9#4E51D9

#4E51D9 is a mid, highly saturated blue. Relative luminance 0.125; OKLCH L 51.7% C 0.203 H 275.7°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#4E51D9
RGB	rgb(78, 81, 217)
HSL	hsl(239, 65%, 58%)
HSV	hsv(239, 64%, 85%)
CMYK	cmyk(64.1%, 62.7%, 0%, 14.9%)
CIE-LAB	lab(42.02, 40.23, -70.13)
CIE-LCH	lch(42.02, 80.85, 299.84°)
OKLab	oklab(51.66% 0.0201 -0.2021)
OKLCH	oklch(51.66% 0.203 275.7)
XYZ	xyz(18.6046, 12.5127, 67.0670)
Luminance	0.1251 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4E51D9 #D9D64E

analogous

#4E96D9 #4E51D9 #904ED9

triadic

#4E51D9 #D94E51 #51D94E

tetradic

#4E51D9 #D94E96 #D9D64E #4ED990

square

#4E51D9 #D94E96 #D9D64E #4ED990

split-complementary

#4E51D9 #D9904E #96D94E

monochromatic

#1F218E #292DC0 #4E51D9 #8083E4 #B3B4EF

Accessibility & contrast

On white

6.00

#4E51D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#4E51D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4E51D9

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4E51D9	#FFFFFF	#000000	##FFFFFF
##4E51D9	1.00	6.00	3.50	6.00
#FFFFFF	6.00	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069DD

Deuteranopia (green-blind)

#005DD6

Tritanopia (blue-blind)

#00738D

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4e51d9;
/* rgb */ color: rgb(78, 81, 217);
/* oklch */ color: oklch(51.7% 0.203 275.7);

Tailwind

colors: {
  custom: {
    50: '#8f82e6',
    500: '#4e51d9',
    950: '#000000',
  },
}

SCSS

$custom: #4e51d9;
$custom-light: #8f82e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4e51d9",
  "rgb": {
    "r": 78,
    "g": 81,
    "b": 217
  },
  "hsl": {
    "h": 238.705,
    "s": 64.651,
    "l": 57.843
  },
  "oklch": {
    "l": 0.51659,
    "c": 0.20315,
    "h": 275.7
  },
  "luminance": 0.12514
}

Semantic roles & 50–950 ramp

primary

#4E51D9

secondary

#DDDCA6

accent

#E440E8

background

#F9F8FE

surface

#F2EFFC

border

#CCCAD5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #4E51D9

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

Preview Lab → · Contrast checker → · Palette generator →