#437DBB#437DBB

#437DBB is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.9% C 0.114 H 251.8°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#437DBB
RGB	rgb(67, 125, 187)
HSL	hsl(211, 47%, 50%)
HSV	hsv(211, 64%, 73%)
CMYK	cmyk(64.2%, 33.2%, 0%, 26.7%)
CIE-LAB	lab(51.21, 0.68, -38.20)
CIE-LCH	lch(51.21, 38.20, 271.03°)
OKLab	oklab(57.88% -0.0356 -0.1081)
OKLCH	oklch(57.88% 0.114 251.8)
XYZ	xyz(18.6147, 19.4466, 49.7766)
Luminance	0.1945 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437DBB #BB8143

analogous

#43B9BB #437DBB #4543BB

triadic

#437DBB #BB437D #7DBB43

tetradic

#437DBB #BB43B9 #BB8143 #43BB45

square

#437DBB #BB43B9 #BB8143 #43BB45

split-complementary

#437DBB #BB4543 #B9BB43

monochromatic

#234161 #335F8E #437DBB #709CCC #9DBBDC

Accessibility & contrast

On white

4.29

#437DBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#437DBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437DBB

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437DBB	#FFFFFF	#000000	##000000
##437DBB	1.00	4.29	4.89	4.89
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6280BE

Deuteranopia (green-blind)

#5275BA

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #437dbb;
/* rgb */ color: rgb(67, 125, 187);
/* oklch */ color: oklch(57.9% 0.114 251.8);

Tailwind

colors: {
  custom: {
    50: '#83a2d0',
    500: '#437dbb',
    950: '#000000',
  },
}

SCSS

$custom: #437dbb;
$custom-light: #83a2d0;
$custom-dark: #000000;

JSON

{
  "hex": "#437dbb",
  "rgb": {
    "r": 67,
    "g": 125,
    "b": 187
  },
  "hsl": {
    "h": 211,
    "s": 47.244,
    "l": 49.804
  },
  "oklch": {
    "l": 0.57884,
    "c": 0.1138,
    "h": 251.8
  },
  "luminance": 0.19448
}

Semantic roles & 50–950 ramp

primary

#437DBB

secondary

#C8AE92

accent

#9651D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0F14

muted

#7D7E82

Preview Lab

Preview with #437DBB

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

Preview Lab → · Contrast checker → · Palette generator →