#4270BF#4270BF

#4270BF is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.2% C 0.133 H 260.5°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#4270BF
RGB	rgb(66, 112, 191)
HSL	hsl(218, 49%, 50%)
HSV	hsv(218, 65%, 75%)
CMYK	cmyk(65.4%, 41.4%, 0%, 25.1%)
CIE-LAB	lab(47.63, 9.86, -46.16)
CIE-LCH	lch(47.63, 47.21, 282.05°)
OKLab	oklab(55.16% -0.022 -0.1316)
OKLCH	oklch(55.16% 0.133 260.5)
XYZ	xyz(17.4416, 16.5065, 51.5470)
Luminance	0.1651 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4270BF #BF9142

analogous

#42AEBF #4270BF #5242BF

triadic

#4270BF #BF4270 #70BF42

tetradic

#4270BF #BF42AE #BF9142 #42BF52

square

#4270BF #BF42AE #BF9142 #42BF52

split-complementary

#4270BF #BF5242 #AEBF42

monochromatic

#223B65 #325592 #4270BF #7093CE #9DB5DE

Accessibility & contrast

On white

4.88

#4270BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#4270BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4270BF

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4270BF	#FFFFFF	#000000	##FFFFFF
##4270BF	1.00	4.88	4.30	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C77C2

Deuteranopia (green-blind)

#396CBD

Tritanopia (blue-blind)

#00828E

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4270bf;
/* rgb */ color: rgb(66, 112, 191);
/* oklch */ color: oklch(55.2% 0.133 260.5);

Tailwind

colors: {
  custom: {
    50: '#8398d3',
    500: '#4270bf',
    950: '#000000',
  },
}

SCSS

$custom: #4270bf;
$custom-light: #8398d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4270bf",
  "rgb": {
    "r": 66,
    "g": 112,
    "b": 191
  },
  "hsl": {
    "h": 217.92,
    "s": 49.407,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55158,
    "c": 0.1334,
    "h": 260.5
  },
  "luminance": 0.16508
}

Semantic roles & 50–950 ramp

primary

#4270BF

secondary

#CAB693

accent

#A64FD9

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D14

muted

#7D7E83

Preview Lab

Preview with #4270BF

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

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