#424CA3#424CA3

#424CA3 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.7% C 0.139 H 274.6°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#424CA3
RGB	rgb(66, 76, 163)
HSL	hsl(234, 42%, 45%)
HSV	hsv(234, 60%, 64%)
CMYK	cmyk(59.5%, 53.4%, 0%, 36.1%)
CIE-LAB	lab(35.93, 23.04, -48.47)
CIE-LCH	lch(35.93, 53.67, 295.42°)
OKLab	oklab(45.66% 0.0111 -0.1388)
OKLCH	oklch(45.66% 0.139 274.6)
XYZ	xyz(11.4399, 8.9706, 35.7719)
Luminance	0.0897 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424CA3 #A39942

analogous

#427DA3 #424CA3 #6842A3

triadic

#424CA3 #A3424C #4CA342

tetradic

#424CA3 #A3427D #A39942 #42A368

square

#424CA3 #A3427D #A39942 #42A368

split-complementary

#424CA3 #A36842 #7DA342

monochromatic

#1F234C #303877 #424CA3 #636CC0 #8E95D1

Accessibility & contrast

On white

7.52

#424CA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#424CA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424CA3

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424CA3	#FFFFFF	#000000	##FFFFFF
##424CA3	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1859A6

Deuteranopia (green-blind)

#0050A1

Tritanopia (blue-blind)

#006070

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #424ca3;
/* rgb */ color: rgb(66, 76, 163);
/* oklch */ color: oklch(45.7% 0.139 274.6);

Tailwind

colors: {
  custom: {
    50: '#7f7dbf',
    500: '#424ca3',
    950: '#000000',
  },
}

SCSS

$custom: #424ca3;
$custom-light: #7f7dbf;
$custom-dark: #000000;

JSON

{
  "hex": "#424ca3",
  "rgb": {
    "r": 66,
    "g": 76,
    "b": 163
  },
  "hsl": {
    "h": 233.814,
    "s": 42.358,
    "l": 44.902
  },
  "oklch": {
    "l": 0.45658,
    "c": 0.13927,
    "h": 274.6
  },
  "luminance": 0.08971
}

Semantic roles & 50–950 ramp

primary

#424CA3

secondary

#BCB784

accent

#C556D2

background

#F8F7FB

surface

#EFEEF7

border

#CAC9D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #424CA3

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

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