#4370BD#4370BD

#4370BD is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.1% C 0.130 H 260.5°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#4370BD
RGB	rgb(67, 112, 189)
HSL	hsl(218, 48%, 50%)
HSV	hsv(218, 65%, 74%)
CMYK	cmyk(64.6%, 40.7%, 0%, 25.9%)
CIE-LAB	lab(47.56, 9.33, -45.12)
CIE-LCH	lch(47.56, 46.07, 281.68°)
OKLab	oklab(55.08% -0.0216 -0.1285)
OKLCH	oklch(55.08% 0.13 260.5)
XYZ	xyz(17.2910, 16.4541, 50.3990)
Luminance	0.1646 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4370BD #BD9043

analogous

#43ADBD #4370BD #5343BD

triadic

#4370BD #BD4370 #70BD43

tetradic

#4370BD #BD43AD #BD9043 #43BD53

square

#4370BD #BD43AD #BD9043 #43BD53

split-complementary

#4370BD #BD5343 #ADBD43

monochromatic

#233A63 #335590 #4370BD #7092CD #9EB5DD

Accessibility & contrast

On white

4.89

#4370BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#4370BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4370BD

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4370BD	#FFFFFF	#000000	##FFFFFF
##4370BD	1.00	4.89	4.29	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D77C0

Deuteranopia (green-blind)

#3B6CBB

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4370bd;
/* rgb */ color: rgb(67, 112, 189);
/* oklch */ color: oklch(55.1% 0.130 260.5);

Tailwind

colors: {
  custom: {
    50: '#8398d1',
    500: '#4370bd',
    950: '#000000',
  },
}

SCSS

$custom: #4370bd;
$custom-light: #8398d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4370bd",
  "rgb": {
    "r": 67,
    "g": 112,
    "b": 189
  },
  "hsl": {
    "h": 217.869,
    "s": 48.031,
    "l": 50.196
  },
  "oklch": {
    "l": 0.55081,
    "c": 0.13028,
    "h": 260.5
  },
  "luminance": 0.16456
}

Semantic roles & 50–950 ramp

primary

#4370BD

secondary

#C9B593

accent

#A650D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4370BD

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

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