#437FDF#437FDF

#437FDF is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.5% C 0.159 H 259.4°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#437FDF
RGB	rgb(67, 127, 223)
HSL	hsl(217, 71%, 57%)
HSV	hsv(217, 70%, 87%)
CMYK	cmyk(70%, 43%, 0%, 12.5%)
CIE-LAB	lab(53.70, 12.11, -54.68)
CIE-LCH	lch(53.70, 56.00, 282.49°)
OKLab	oklab(60.46% -0.0292 -0.1563)
OKLCH	oklch(60.46% 0.159 259.4)
XYZ	xyz(23.2186, 21.6973, 72.7621)
Luminance	0.2170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437FDF #DFA343

analogous

#43CDDF #437FDF #5543DF

triadic

#437FDF #DF437F #7FDF43

tetradic

#437FDF #DF43CD #DFA343 #43DF55

square

#437FDF #DF43CD #DFA343 #43DF55

split-complementary

#437FDF #DF5543 #CDDF43

monochromatic

#18468F #2160C4 #437FDF #77A3E8 #ACC6F1

Accessibility & contrast

On white

3.93

#437FDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.34

#437FDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437FDF

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437FDF	#FFFFFF	#000000	##000000
##437FDF	1.00	3.93	5.34	5.34
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.34	21.00	1.00	1.00
##000000	5.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5088E3

Deuteranopia (green-blind)

#357ADD

Tritanopia (blue-blind)

#0095A4

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #437fdf;
/* rgb */ color: rgb(67, 127, 223);
/* oklch */ color: oklch(60.5% 0.159 259.4);

Tailwind

colors: {
  custom: {
    50: '#89a3e9',
    500: '#437fdf',
    950: '#000000',
  },
}

SCSS

$custom: #437fdf;
$custom-light: #89a3e9;
$custom-dark: #000000;

JSON

{
  "hex": "#437fdf",
  "rgb": {
    "r": 67,
    "g": 127,
    "b": 223
  },
  "hsl": {
    "h": 216.923,
    "s": 70.909,
    "l": 56.863
  },
  "oklch": {
    "l": 0.60457,
    "c": 0.15902,
    "h": 259.4
  },
  "luminance": 0.217
}

Semantic roles & 50–950 ramp

primary

#437FDF

secondary

#DFC69F

accent

#A93AEE

background

#F9FAFE

surface

#F1F3FD

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #437FDF

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

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