#237BB2#237BB2
#237BB2 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.9% C 0.117 H 241.6°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).
Color values
| HEX | #237BB2 |
|---|---|
| RGB | rgb(35, 123, 178) |
| HSL | hsl(203, 67%, 42%) |
| HSV | hsv(203, 80%, 70%) |
| CMYK | cmyk(80.3%, 30.9%, 0%, 30.2%) |
| CIE-LAB | lab(49.17, -5.95, -36.28) |
| CIE-LCH | lch(49.17, 36.76, 260.69°) |
| OKLab | oklab(55.86% -0.0556 -0.1029) |
| OKLCH | oklch(55.86% 0.117 241.6) |
| XYZ | xyz(15.8088, 17.7357, 44.7010) |
| Luminance | 0.1774 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Nice Blue
#107AB0
ΔE00 1.32
Bluish
#2976BB
ΔE00 3.64
Steel Blue
#4682B4
ΔE00 4.04
Cerulean
#007BA7
ΔE00 4.25
Flat Blue
#3C73A8
ΔE00 4.56
Windows Blue
#3778BF
ΔE00 4.72
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#237BB2 #B25A23
analogous
#23B2A2 #237BB2 #2334B2
triadic
#237BB2 #B2237B #7BB223
tetradic
#237BB2 #A223B2 #B25A23 #34B223
square
#237BB2 #A223B2 #B25A23 #34B223
split-complementary
#237BB2 #B22334 #B2A223
monochromatic
#0F344C #19587F #237BB2 #3A9BD8 #6DB5E2
Accessibility & contrast
On white
4.62
#237BB2 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.55
#237BB2 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#FFFFFF on #237BB2
4.62:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##237BB2 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##237BB2 | 1.00 | 4.62 | 4.55 | 4.62 |
| #FFFFFF | 4.62 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.55 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.62 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#617CB4
Deuteranopia (green-blind)
#4D6FB1
Tritanopia (blue-blind)
#00898E
Achromatopsia (no color)
#757575
Design tokens & code
CSS
--color: #237bb2; /* rgb */ color: rgb(35, 123, 178); /* oklch */ color: oklch(55.9% 0.117 241.6);
Tailwind
colors: {
custom: {
50: '#75a1c9',
500: '#237bb2',
950: '#000000',
},
}SCSS
$custom: #237bb2; $custom-light: #75a1c9; $custom-dark: #000000;
JSON
{
"hex": "#237bb2",
"rgb": {
"r": 35,
"g": 123,
"b": 178
},
"hsl": {
"h": 203.077,
"s": 67.136,
"l": 41.765
},
"oklch": {
"l": 0.55859,
"c": 0.11695,
"h": 241.6
},
"luminance": 0.17738
}Semantic roles & 50–950 ramp
primary
#237BB2
secondary
#C98D68
accent
#803EEA
background
#F7F9FC
surface
#EEF2F8
border
#C9CCD1
text
#0A0E13
muted
#7C7E82