#3437CF#3437CF

#3437CF is a mid, highly saturated blue. Relative luminance 0.080; OKLCH L 45.1% C 0.225 H 272.0°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#3437CF
RGB	rgb(52, 55, 207)
HSL	hsl(239, 62%, 51%)
HSV	hsv(239, 75%, 81%)
CMYK	cmyk(74.9%, 73.4%, 0%, 18.8%)
CIE-LAB	lab(33.91, 49.18, -77.75)
CIE-LCH	lch(33.91, 92.00, 302.32°)
OKLab	oklab(45.11% 0.0079 -0.225)
OKLCH	oklch(45.11% 0.225 272)
XYZ	xyz(14.0410, 7.9659, 59.8170)
Luminance	0.0797 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3437CF #CFCC34

analogous

#3484CF #3437CF #7E34CF

triadic

#3437CF #CF3437 #37CF34

tetradic

#3437CF #CF3484 #CFCC34 #34CF7E

square

#3437CF #CF3484 #CFCC34 #34CF7E

split-complementary

#3437CF #CF7E34 #84CF34

monochromatic

#1A1C6E #2628A0 #3437CF #6568DB #9799E6

Accessibility & contrast

On white

8.10

#3437CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3437CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3437CF

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3437CF	#FFFFFF	#000000	##FFFFFF
##3437CF	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057D3

Deuteranopia (green-blind)

#0048CC

Tritanopia (blue-blind)

#006380

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3437cf;
/* rgb */ color: rgb(52, 55, 207);
/* oklch */ color: oklch(45.1% 0.225 272.0);

Tailwind

colors: {
  custom: {
    50: '#8470df',
    500: '#3437cf',
    950: '#000000',
  },
}

SCSS

$custom: #3437cf;
$custom-light: #8470df;
$custom-dark: #000000;

JSON

{
  "hex": "#3437cf",
  "rgb": {
    "r": 52,
    "g": 55,
    "b": 207
  },
  "hsl": {
    "h": 238.839,
    "s": 61.753,
    "l": 50.784
  },
  "oklch": {
    "l": 0.45108,
    "c": 0.22518,
    "h": 272
  },
  "luminance": 0.07967
}

Semantic roles & 50–950 ramp

primary

#3437CF

secondary

#D2D08D

accent

#E243E5

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3437CF

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

Preview Lab → · Contrast checker → · Palette generator →