#4270BC#4270BC

#4270BC is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.0% C 0.129 H 259.9°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#4270BC
RGB	rgb(66, 112, 188)
HSL	hsl(217, 48%, 50%)
HSV	hsv(217, 65%, 74%)
CMYK	cmyk(64.9%, 40.4%, 0%, 26.3%)
CIE-LAB	lab(47.46, 8.80, -44.70)
CIE-LCH	lch(47.46, 45.56, 281.13°)
OKLab	oklab(54.97% -0.0226 -0.1273)
OKLCH	oklch(54.97% 0.129 259.9)
XYZ	xyz(17.1148, 16.3758, 49.8261)
Luminance	0.1638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4270BC #BC8E42

analogous

#42ADBC #4270BC #5142BC

triadic

#4270BC #BC4270 #70BC42

tetradic

#4270BC #BC42AD #BC8E42 #42BC51

square

#4270BC #BC42AD #BC8E42 #42BC51

split-complementary

#4270BC #BC5142 #ADBC42

monochromatic

#223A61 #32558F #4270BC #6F92CC #9CB4DC

Accessibility & contrast

On white

4.91

#4270BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#4270BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4270BC

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4270BC	#FFFFFF	#000000	##FFFFFF
##4270BC	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E77BF

Deuteranopia (green-blind)

#3C6BBA

Tritanopia (blue-blind)

#00818D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4270bc;
/* rgb */ color: rgb(66, 112, 188);
/* oklch */ color: oklch(55.0% 0.129 259.9);

Tailwind

colors: {
  custom: {
    50: '#8298d0',
    500: '#4270bc',
    950: '#000000',
  },
}

SCSS

$custom: #4270bc;
$custom-light: #8298d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4270bc",
  "rgb": {
    "r": 66,
    "g": 112,
    "b": 188
  },
  "hsl": {
    "h": 217.377,
    "s": 48.031,
    "l": 49.804
  },
  "oklch": {
    "l": 0.54973,
    "c": 0.12928,
    "h": 259.9
  },
  "luminance": 0.16377
}

Semantic roles & 50–950 ramp

primary

#4270BC

secondary

#C9B491

accent

#A550D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4270BC

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

Preview Lab → · Contrast checker → · Palette generator →