#4370BC#4370BC

#4370BC is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.0% C 0.129 H 260.3°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#4370BC
RGB	rgb(67, 112, 188)
HSL	hsl(218, 47%, 50%)
HSV	hsv(218, 64%, 74%)
CMYK	cmyk(64.4%, 40.4%, 0%, 26.3%)
CIE-LAB	lab(47.51, 8.97, -44.63)
CIE-LCH	lch(47.51, 45.52, 281.37°)
OKLab	oklab(55.02% -0.0218 -0.127)
OKLCH	oklch(55.02% 0.129 260.3)
XYZ	xyz(17.1828, 16.4109, 49.8293)
Luminance	0.1641 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4370BC #BC8F43

analogous

#43ACBC #4370BC #5343BC

triadic

#4370BC #BC4370 #70BC43

tetradic

#4370BC #BC43AC #BC8F43 #43BC53

square

#4370BC #BC43AC #BC8F43 #43BC53

split-complementary

#4370BC #BC5343 #ACBC43

monochromatic

#233A62 #33558F #4370BC #7092CC #9DB5DC

Accessibility & contrast

On white

4.90

#4370BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#4370BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4370BC

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4370BC	#FFFFFF	#000000	##FFFFFF
##4370BC	1.00	4.90	4.28	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E77BF

Deuteranopia (green-blind)

#3C6CBA

Tritanopia (blue-blind)

#00818D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4370bc;
/* rgb */ color: rgb(67, 112, 188);
/* oklch */ color: oklch(55.0% 0.129 260.3);

Tailwind

colors: {
  custom: {
    50: '#8398d0',
    500: '#4370bc',
    950: '#000000',
  },
}

SCSS

$custom: #4370bc;
$custom-light: #8398d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4370bc",
  "rgb": {
    "r": 67,
    "g": 112,
    "b": 188
  },
  "hsl": {
    "h": 217.686,
    "s": 47.451,
    "l": 50
  },
  "oklch": {
    "l": 0.5502,
    "c": 0.1289,
    "h": 260.3
  },
  "luminance": 0.16412
}

Semantic roles & 50–950 ramp

primary

#4370BC

secondary

#C9B492

accent

#A551D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4370BC

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

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