#437DCB#437DCB
#437DCB is a mid, vivid cyan. Relative luminance 0.202; OKLCH L 58.8% C 0.135 H 256.5°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).
Color values
| HEX | #437DCB |
|---|---|
| RGB | rgb(67, 125, 203) |
| HSL | hsl(214, 57%, 53%) |
| HSV | hsv(214, 67%, 80%) |
| CMYK | cmyk(67%, 38.4%, 0%, 20.4%) |
| CIE-LAB | lab(52.03, 6.25, -46.04) |
| CIE-LCH | lch(52.03, 46.46, 277.73°) |
| OKLab | oklab(58.8% -0.0315 -0.131) |
| OKLCH | oklch(58.8% 0.135 256.5) |
| XYZ | xyz(20.4239, 20.1703, 59.3052) |
| Luminance | 0.2017 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Windows Blue
#3778BF
ΔE00 2.82
Cool Blue
#4984B8
ΔE00 3.92
Steel Blue
#4682B4
ΔE00 4.13
Off Blue
#5684AE
ΔE00 4.52
Bluish
#2976BB
ΔE00 4.56
Deep Sky Blue
#0D75F8
ΔE00 4.79
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#437DCB #CB9143
analogous
#43C1CB #437DCB #4D43CB
triadic
#437DCB #CB437D #7DCB43
tetradic
#437DCB #CB43C1 #CB9143 #43CB4D
square
#437DCB #CB43C1 #CB9143 #43CB4D
split-complementary
#437DCB #CB4D43 #C1CB43
monochromatic
#204474 #2D60A4 #437DCB #739ED8 #A3BFE6
Accessibility & contrast
On white
4.17
#437DCB on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.03
#437DCB on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #437DCB
5.03:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##437DCB | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##437DCB | 1.00 | 4.17 | 5.03 | 5.03 |
| #FFFFFF | 4.17 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.03 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.03 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5A83CE
Deuteranopia (green-blind)
#4676C9
Tritanopia (blue-blind)
#008F9A
Achromatopsia (no color)
#7C7C7C
Design tokens & code
CSS
--color: #437dcb; /* rgb */ color: rgb(67, 125, 203); /* oklch */ color: oklch(58.8% 0.135 256.5);
Tailwind
colors: {
custom: {
50: '#85a2db',
500: '#437dcb',
950: '#000000',
},
}SCSS
$custom: #437dcb; $custom-light: #85a2db; $custom-dark: #000000;
JSON
{
"hex": "#437dcb",
"rgb": {
"r": 67,
"g": 125,
"b": 203
},
"hsl": {
"h": 214.412,
"s": 56.667,
"l": 52.941
},
"oklch": {
"l": 0.58796,
"c": 0.13475,
"h": 256.5
},
"luminance": 0.20172
}Semantic roles & 50–950 ramp
primary
#437DCB
secondary
#D2B998
accent
#9F48E0
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0F15
muted
#7D7E83