#437ED9#437ED9

#437ED9 is a mid, vivid blue. Relative luminance 0.211; OKLCH L 59.9% C 0.152 H 258.8°. Best body text is #000000 at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#437ED9
RGB	rgb(67, 126, 217)
HSL	hsl(216, 66%, 56%)
HSV	hsv(216, 69%, 85%)
CMYK	cmyk(69.1%, 41.9%, 0%, 14.9%)
CIE-LAB	lab(53.08, 10.59, -52.29)
CIE-LCH	lch(53.08, 53.35, 281.45°)
OKLab	oklab(59.87% -0.0294 -0.1493)
OKLCH	oklch(59.87% 0.152 258.8)
XYZ	xyz(22.2955, 21.1224, 68.5342)
Luminance	0.2112 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437ED9 #D99E43

analogous

#43C9D9 #437ED9 #5343D9

triadic

#437ED9 #D9437E #7ED943

tetradic

#437ED9 #D943C9 #D99E43 #43D953

square

#437ED9 #D943C9 #D99E43 #43D953

split-complementary

#437ED9 #D95343 #C9D943

monochromatic

#1B4586 #2560B9 #437ED9 #76A1E3 #A9C4EE

Accessibility & contrast

On white

4.02

#437ED9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.23

#437ED9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437ED9

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437ED9	#FFFFFF	#000000	##000000
##437ED9	1.00	4.02	5.23	5.23
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.23	21.00	1.00	1.00
##000000	5.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5386DD

Deuteranopia (green-blind)

#3A78D7

Tritanopia (blue-blind)

#0093A1

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #437ed9;
/* rgb */ color: rgb(67, 126, 217);
/* oklch */ color: oklch(59.9% 0.152 258.8);

Tailwind

colors: {
  custom: {
    50: '#88a2e5',
    500: '#437ed9',
    950: '#000000',
  },
}

SCSS

$custom: #437ed9;
$custom-light: #88a2e5;
$custom-dark: #000000;

JSON

{
  "hex": "#437ed9",
  "rgb": {
    "r": 67,
    "g": 126,
    "b": 217
  },
  "hsl": {
    "h": 216.4,
    "s": 66.372,
    "l": 55.686
  },
  "oklch": {
    "l": 0.59865,
    "c": 0.15221,
    "h": 258.8
  },
  "luminance": 0.21125
}

Semantic roles & 50–950 ramp

primary

#437ED9

secondary

#DBC39D

accent

#A63FE9

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0F16

muted

#7E7E84

Preview Lab

Preview with #437ED9

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

Preview Lab → · Contrast checker → · Palette generator →