#4F88EF#4F88EF

#4F88EF is a light, vivid blue. Relative luminance 0.255; OKLCH L 63.9% C 0.166 H 261.2°. Best body text is #000000 at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#4F88EF
RGB	rgb(79, 136, 239)
HSL	hsl(219, 83%, 62%)
HSV	hsv(219, 67%, 94%)
CMYK	cmyk(66.9%, 43.1%, 0%, 6.3%)
CIE-LAB	lab(57.56, 14.05, -57.41)
CIE-LCH	lch(57.56, 59.10, 283.75°)
OKLab	oklab(63.86% -0.0254 -0.164)
OKLCH	oklch(63.86% 0.166 261.2)
XYZ	xyz(27.6031, 25.4998, 85.1119)
Luminance	0.2550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F88EF #EFB64F

analogous

#4FD8EF #4F88EF #664FEF

triadic

#4F88EF #EF4F88 #88EF4F

tetradic

#4F88EF #EF4FD8 #EFB64F #4FEF66

square

#4F88EF #EF4FD8 #EFB64F #4FEF66

split-complementary

#4F88EF #EF664F #D8EF4F

monochromatic

#104AB3 #1762EA #4F88EF #87AEF4 #BFD4F9

Accessibility & contrast

On white

3.44

#4F88EF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.10

#4F88EF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F88EF

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F88EF	#FFFFFF	#000000	##000000
##4F88EF	1.00	3.44	6.10	6.10
#FFFFFF	3.44	1.00	21.00	21.00
#000000	6.10	21.00	1.00	1.00
##000000	6.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5792F3

Deuteranopia (green-blind)

#3B83ED

Tritanopia (blue-blind)

#00A0B0

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #4f88ef;
/* rgb */ color: rgb(79, 136, 239);
/* oklch */ color: oklch(63.9% 0.166 261.2);

Tailwind

colors: {
  custom: {
    50: '#90aaf5',
    500: '#4f88ef',
    950: '#000000',
  },
}

SCSS

$custom: #4f88ef;
$custom-light: #90aaf5;
$custom-dark: #000000;

JSON

{
  "hex": "#4f88ef",
  "rgb": {
    "r": 79,
    "g": 136,
    "b": 239
  },
  "hsl": {
    "h": 218.625,
    "s": 83.333,
    "l": 62.353
  },
  "oklch": {
    "l": 0.6386,
    "c": 0.16598,
    "h": 261.2
  },
  "luminance": 0.25503
}

Semantic roles & 50–950 ramp

primary

#4F88EF

secondary

#EAD5B0

accent

#9206E0

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #4F88EF

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

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