#4274BB#4274BB

#4274BB is a mid, vivid blue. Relative luminance 0.172; OKLCH L 55.8% C 0.123 H 257.4°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#4274BB
RGB	rgb(66, 116, 187)
HSL	hsl(215, 48%, 50%)
HSV	hsv(215, 65%, 73%)
CMYK	cmyk(64.7%, 38%, 0%, 26.7%)
CIE-LAB	lab(48.55, 5.97, -42.39)
CIE-LCH	lch(48.55, 42.81, 278.02°)
OKLab	oklab(55.8% -0.027 -0.1205)
OKLCH	oklch(55.8% 0.123 257.4)
XYZ	xyz(17.4586, 17.2352, 49.4107)
Luminance	0.1724 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4274BB #BB8942

analogous

#42B0BB #4274BB #4D42BB

triadic

#4274BB #BB4274 #74BB42

tetradic

#4274BB #BB42B0 #BB8942 #42BB4D

square

#4274BB #BB42B0 #BB8942 #42BB4D

split-complementary

#4274BB #BB4D42 #B0BB42

monochromatic

#223C61 #32588E #4274BB #6E95CC #9CB6DC

Accessibility & contrast

On white

4.72

#4274BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#4274BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4274BB

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4274BB	#FFFFFF	#000000	##FFFFFF
##4274BB	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5579BE

Deuteranopia (green-blind)

#446EBA

Tritanopia (blue-blind)

#00848E

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4274bb;
/* rgb */ color: rgb(66, 116, 187);
/* oklch */ color: oklch(55.8% 0.123 257.4);

Tailwind

colors: {
  custom: {
    50: '#829bd0',
    500: '#4274bb',
    950: '#000000',
  },
}

SCSS

$custom: #4274bb;
$custom-light: #829bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#4274bb",
  "rgb": {
    "r": 66,
    "g": 116,
    "b": 187
  },
  "hsl": {
    "h": 215.207,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55802,
    "c": 0.12344,
    "h": 257.4
  },
  "luminance": 0.17237
}

Semantic roles & 50–950 ramp

primary

#4274BB

secondary

#C8B191

accent

#A050D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #4274BB

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

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