#437DDA#437DDA

#437DDA is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.7% C 0.155 H 259.4°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#437DDA
RGB	rgb(67, 125, 218)
HSL	hsl(217, 67%, 56%)
HSV	hsv(217, 69%, 85%)
CMYK	cmyk(69.3%, 42.7%, 0%, 14.5%)
CIE-LAB	lab(52.86, 11.56, -53.21)
CIE-LCH	lch(52.86, 54.45, 282.26°)
OKLab	oklab(59.71% -0.0283 -0.152)
OKLCH	oklch(59.71% 0.155 259.4)
XYZ	xyz(22.2987, 20.9202, 69.1789)
Luminance	0.2092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437DDA #DAA043

analogous

#43C8DA #437DDA #5443DA

triadic

#437DDA #DA437D #7DDA43

tetradic

#437DDA #DA43C8 #DAA043 #43DA54

square

#437DDA #DA43C8 #DAA043 #43DA54

split-complementary

#437DDA #DA5443 #C8DA43

monochromatic

#1B4588 #255EBB #437DDA #76A0E4 #A9C4EE

Accessibility & contrast

On white

4.05

#437DDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#437DDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437DDA

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437DDA	#FFFFFF	#000000	##000000
##437DDA	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5086DE

Deuteranopia (green-blind)

#3678D8

Tritanopia (blue-blind)

#0093A1

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #437dda;
/* rgb */ color: rgb(67, 125, 218);
/* oklch */ color: oklch(59.7% 0.155 259.4);

Tailwind

colors: {
  custom: {
    50: '#88a2e6',
    500: '#437dda',
    950: '#000000',
  },
}

SCSS

$custom: #437dda;
$custom-light: #88a2e6;
$custom-dark: #000000;

JSON

{
  "hex": "#437dda",
  "rgb": {
    "r": 67,
    "g": 125,
    "b": 218
  },
  "hsl": {
    "h": 216.954,
    "s": 67.111,
    "l": 55.882
  },
  "oklch": {
    "l": 0.59713,
    "c": 0.15466,
    "h": 259.4
  },
  "luminance": 0.20922
}

Semantic roles & 50–950 ramp

primary

#437DDA

secondary

#DCC49D

accent

#A83EEA

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0F16

muted

#7E7E84

Preview Lab

Preview with #437DDA

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

Preview Lab → · Contrast checker → · Palette generator →