#1B658E#1B658E
#1B658E is a mid, moderate cyan. Relative luminance 0.115; OKLCH L 48.3% C 0.096 H 238.4°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).
Color values
| HEX | #1B658E |
|---|---|
| RGB | rgb(27, 101, 142) |
| HSL | hsl(201, 68%, 33%) |
| HSV | hsv(201, 81%, 56%) |
| CMYK | cmyk(81%, 28.9%, 0%, 44.3%) |
| CIE-LAB | lab(40.40, -7.16, -28.84) |
| CIE-LCH | lch(40.40, 29.72, 256.06°) |
| OKLab | oklab(48.27% -0.0502 -0.0816) |
| OKLCH | oklch(48.27% 0.096 238.4) |
| XYZ | xyz(9.9862, 11.4921, 27.2778) |
| Luminance | 0.1149 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Peacock Blue
#016795
ΔE00 1.34
Ugly Blue
#31668A
ΔE00 2.03
Ocean Blue (survey)
#03719C
ΔE00 4.56
Denim (survey)
#3B638C
ΔE00 5.07
Muted Blue
#3B719F
ΔE00 5.83
Deep Sea Blue
#015482
ΔE00 6.05
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B658E #8E441B
analogous
#1B8E7D #1B658E #1B2C8E
triadic
#1B658E #8E1B65 #658E1B
tetradic
#1B658E #7D1B8E #8E441B #2C8E1B
square
#1B658E #7D1B8E #8E441B #2C8E1B
split-complementary
#1B658E #8E1B2C #8E7D1B
monochromatic
#071C27 #11405B #1B658E #258AC1 #47A7DC
Accessibility & contrast
On white
6.37
#1B658E on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.30
#1B658E on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #1B658E
6.37:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B658E | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B658E | 1.00 | 6.37 | 3.30 | 6.37 |
| #FFFFFF | 6.37 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.30 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 6.37 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#516590
Deuteranopia (green-blind)
#425A8D
Tritanopia (blue-blind)
#006F73
Achromatopsia (no color)
#5F5F5F
Design tokens & code
CSS
--color: #1b658e; /* rgb */ color: rgb(27, 101, 142); /* oklch */ color: oklch(48.3% 0.096 238.4);
Tailwind
colors: {
custom: {
50: '#6b90af',
500: '#1b658e',
950: '#000000',
},
}SCSS
$custom: #1b658e; $custom-light: #6b90af; $custom-dark: #000000;
JSON
{
"hex": "#1b658e",
"rgb": {
"r": 27,
"g": 101,
"b": 142
},
"hsl": {
"h": 201.391,
"s": 68.047,
"l": 33.137
},
"oklch": {
"l": 0.48268,
"c": 0.09579,
"h": 238.4
},
"luminance": 0.11493
}Semantic roles & 50–950 ramp
primary
#1B658E
secondary
#BE7147
accent
#7B3DEB
background
#F6F8FA
surface
#ECF0F4
border
#C7CBCE
text
#080C10
muted
#7A7D7F