#437DDB#437DDB

#437DDB is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.8% C 0.156 H 259.6°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#437DDB
RGB	rgb(67, 125, 219)
HSL	hsl(217, 68%, 56%)
HSV	hsv(217, 69%, 86%)
CMYK	cmyk(69.4%, 42.9%, 0%, 14.1%)
CIE-LAB	lab(52.92, 11.91, -53.68)
CIE-LCH	lch(52.92, 54.99, 282.51°)
OKLab	oklab(59.78% -0.0281 -0.1534)
OKLCH	oklch(59.78% 0.156 259.6)
XYZ	xyz(22.4299, 20.9727, 69.8701)
Luminance	0.2097 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437DDB #DBA143

analogous

#43C9DB #437DDB #5543DB

triadic

#437DDB #DB437D #7DDB43

tetradic

#437DDB #DB43C9 #DBA143 #43DB55

square

#437DDB #DB43C9 #DBA143 #43DB55

split-complementary

#437DDB #DB5543 #C9DB43

monochromatic

#1A4589 #245EBD #437DDB #76A1E5 #AAC4EF

Accessibility & contrast

On white

4.04

#437DDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#437DDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437DDB

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437DDB	#FFFFFF	#000000	##000000
##437DDB	1.00	4.04	5.19	5.19
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5086DF

Deuteranopia (green-blind)

#3578D9

Tritanopia (blue-blind)

#0093A1

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #437ddb;
/* rgb */ color: rgb(67, 125, 219);
/* oklch */ color: oklch(59.8% 0.156 259.6);

Tailwind

colors: {
  custom: {
    50: '#88a2e7',
    500: '#437ddb',
    950: '#000000',
  },
}

SCSS

$custom: #437ddb;
$custom-light: #88a2e7;
$custom-dark: #000000;

JSON

{
  "hex": "#437ddb",
  "rgb": {
    "r": 67,
    "g": 125,
    "b": 219
  },
  "hsl": {
    "h": 217.105,
    "s": 67.857,
    "l": 56.078
  },
  "oklch": {
    "l": 0.59776,
    "c": 0.15599,
    "h": 259.6
  },
  "luminance": 0.20975
}

Semantic roles & 50–950 ramp

primary

#437DDB

secondary

#DCC49E

accent

#A83DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0F16

muted

#7E7E84

Preview Lab

Preview with #437DDB

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

Preview Lab → · Contrast checker → · Palette generator →