#4370BE#4370BE

#4370BE is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.1% C 0.132 H 260.7°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#4370BE
RGB	rgb(67, 112, 190)
HSL	hsl(218, 49%, 50%)
HSV	hsv(218, 65%, 75%)
CMYK	cmyk(64.7%, 41.1%, 0%, 25.5%)
CIE-LAB	lab(47.62, 9.68, -45.60)
CIE-LCH	lch(47.62, 46.62, 281.98°)
OKLab	oklab(55.14% -0.0214 -0.1299)
OKLCH	oklch(55.14% 0.132 260.7)
XYZ	xyz(17.3999, 16.4977, 50.9726)
Luminance	0.1650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4370BE #BE9143

analogous

#43ADBE #4370BE #5343BE

triadic

#4370BE #BE4370 #70BE43

tetradic

#4370BE #BE43AD #BE9143 #43BE53

square

#4370BE #BE43AD #BE9143 #43BE53

split-complementary

#4370BE #BE5343 #ADBE43

monochromatic

#233B64 #325591 #4370BE #7093CE #9EB5DD

Accessibility & contrast

On white

4.88

#4370BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#4370BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4370BE

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4370BE	#FFFFFF	#000000	##FFFFFF
##4370BE	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)

#4D77C1

Deuteranopia (green-blind)

#3A6CBC

Tritanopia (blue-blind)

#00828E

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4370be;
/* rgb */ color: rgb(67, 112, 190);
/* oklch */ color: oklch(55.1% 0.132 260.7);

Tailwind

colors: {
  custom: {
    50: '#8398d2',
    500: '#4370be',
    950: '#000000',
  },
}

SCSS

$custom: #4370be;
$custom-light: #8398d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4370be",
  "rgb": {
    "r": 67,
    "g": 112,
    "b": 190
  },
  "hsl": {
    "h": 218.049,
    "s": 48.617,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55143,
    "c": 0.13166,
    "h": 260.7
  },
  "luminance": 0.16499
}

Semantic roles & 50–950 ramp

primary

#4370BE

secondary

#CAB693

accent

#A650D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4370BE

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

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