#337BA1#337BA1
#337BA1 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.4% C 0.092 H 235.0°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).
Color values
| HEX | #337BA1 |
|---|---|
| RGB | rgb(51, 123, 161) |
| HSL | hsl(201, 52%, 42%) |
| HSV | hsv(201, 68%, 63%) |
| CMYK | cmyk(68.3%, 23.6%, 0%, 36.9%) |
| CIE-LAB | lab(48.81, -9.89, -26.93) |
| CIE-LCH | lch(48.81, 28.69, 249.84°) |
| OKLab | oklab(55.43% -0.0529 -0.0756) |
| OKLCH | oklch(55.43% 0.092 235) |
| XYZ | xyz(14.8787, 17.4413, 36.2937) |
| Luminance | 0.1744 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Cerulean
#007BA7
ΔE00 2.37
Nice Blue
#107AB0
ΔE00 3.36
Stormy Blue
#507B9C
ΔE00 4.10
Ocean Blue (survey)
#03719C
ΔE00 4.40
Dirty Blue
#3F829D
ΔE00 4.48
Sea Blue
#047495
ΔE00 4.89
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#337BA1 #A15933
analogous
#33A190 #337BA1 #3344A1
triadic
#337BA1 #A1337B #7BA133
tetradic
#337BA1 #9033A1 #A15933 #44A133
square
#337BA1 #9033A1 #A15933 #44A133
split-complementary
#337BA1 #A13344 #A19033
monochromatic
#163444 #245773 #337BA1 #4B9CC6 #7AB5D5
Accessibility & contrast
On white
4.68
#337BA1 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.49
#337BA1 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #337BA1
4.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##337BA1 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##337BA1 | 1.00 | 4.68 | 4.49 | 4.68 |
| #FFFFFF | 4.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.49 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#697AA3
Deuteranopia (green-blind)
#5A6FA0
Tritanopia (blue-blind)
#008588
Achromatopsia (no color)
#747474
Design tokens & code
CSS
--color: #337ba1; /* rgb */ color: rgb(51, 123, 161); /* oklch */ color: oklch(55.4% 0.092 235.0);
Tailwind
colors: {
custom: {
50: '#78a1bd',
500: '#337ba1',
950: '#000000',
},
}SCSS
$custom: #337ba1; $custom-light: #78a1bd; $custom-dark: #000000;
JSON
{
"hex": "#337ba1",
"rgb": {
"r": 51,
"g": 123,
"b": 161
},
"hsl": {
"h": 200.727,
"s": 51.887,
"l": 41.569
},
"oklch": {
"l": 0.55433,
"c": 0.09231,
"h": 235
},
"luminance": 0.17443
}Semantic roles & 50–950 ramp
primary
#337BA1
secondary
#BD8C72
accent
#7E4CDB
background
#F7F9FB
surface
#EEF2F6
border
#C9CCD0
text
#0A0E12
muted
#7C7E81