#437FDE#437FDE

#437FDE is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.4% C 0.158 H 259.3°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#437FDE
RGB	rgb(67, 127, 222)
HSL	hsl(217, 70%, 57%)
HSV	hsv(217, 70%, 87%)
CMYK	cmyk(69.8%, 42.8%, 0%, 12.9%)
CIE-LAB	lab(53.65, 11.76, -54.21)
CIE-LCH	lch(53.65, 55.47, 282.24°)
OKLab	oklab(60.39% -0.0294 -0.1549)
OKLCH	oklch(60.39% 0.158 259.3)
XYZ	xyz(23.0842, 21.6435, 72.0541)
Luminance	0.2165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437FDE #DEA243

analogous

#43CDDE #437FDE #5543DE

triadic

#437FDE #DE437F #7FDE43

tetradic

#437FDE #DE43CD #DEA243 #43DE55

square

#437FDE #DE43CD #DEA243 #43DE55

split-complementary

#437FDE #DE5543 #CDDE43

monochromatic

#19468E #2260C2 #437FDE #77A2E7 #ABC6F0

Accessibility & contrast

On white

3.94

#437FDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#437FDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437FDE

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437FDE	#FFFFFF	#000000	##000000
##437FDE	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5188E2

Deuteranopia (green-blind)

#367ADC

Tritanopia (blue-blind)

#0095A4

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #437fde;
/* rgb */ color: rgb(67, 127, 222);
/* oklch */ color: oklch(60.4% 0.158 259.3);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#437fde",
  "rgb": {
    "r": 67,
    "g": 127,
    "b": 222
  },
  "hsl": {
    "h": 216.774,
    "s": 70.136,
    "l": 56.667
  },
  "oklch": {
    "l": 0.60394,
    "c": 0.1577,
    "h": 259.3
  },
  "luminance": 0.21646
}

Semantic roles & 50–950 ramp

primary

#437FDE

secondary

#DEC69F

accent

#A83BED

background

#F9FAFE

surface

#F1F3FD

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #437FDE

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

Preview Lab → · Contrast checker → · Palette generator →