#1F5BAB#1F5BAB
#1F5BAB is a mid, vivid cyan. Relative luminance 0.107; OKLCH L 47.8% C 0.142 H 257.2°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).
Color values
| HEX | #1F5BAB |
|---|---|
| RGB | rgb(31, 91, 171) |
| HSL | hsl(214, 69%, 40%) |
| HSV | hsv(214, 82%, 67%) |
| CMYK | cmyk(81.9%, 46.8%, 0%, 32.9%) |
| CIE-LAB | lab(39.09, 10.94, -48.22) |
| CIE-LCH | lch(39.09, 49.45, 282.78°) |
| OKLab | oklab(47.81% -0.0316 -0.1385) |
| OKLCH | oklch(47.81% 0.142 257.2) |
| XYZ | xyz(11.6541, 10.7123, 39.9736) |
| Luminance | 0.1071 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Denim
#1560BD
ΔE00 2.57
Sapphire
#0F52BA
ΔE00 3.85
Denim Blue
#3B5B92
ΔE00 4.00
Light Navy Blue
#2E5A88
ΔE00 4.03
Dusk Blue
#26538D
ΔE00 4.23
Denim (survey)
#3B638C
ΔE00 4.71
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F5BAB #AB6F1F
analogous
#1FA1AB #1F5BAB #291FAB
triadic
#1F5BAB #AB1F5B #5BAB1F
tetradic
#1F5BAB #AB1FA1 #AB6F1F #1FAB29
square
#1F5BAB #AB1FA1 #AB6F1F #1FAB29
split-complementary
#1F5BAB #AB291F #A1AB1F
monochromatic
#0C2443 #163F77 #1F5BAB #2E77D9 #6299E3
Accessibility & contrast
On white
6.68
#1F5BAB on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.14
#1F5BAB on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #1F5BAB
6.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F5BAB | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F5BAB | 1.00 | 6.68 | 3.14 | 6.68 |
| #FFFFFF | 6.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.14 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 6.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2F63AE
Deuteranopia (green-blind)
#0756A9
Tritanopia (blue-blind)
#006E7A
Achromatopsia (no color)
#5C5C5C
Design tokens & code
CSS
--color: #1f5bab; /* rgb */ color: rgb(31, 91, 171); /* oklch */ color: oklch(47.8% 0.142 257.2);
Tailwind
colors: {
custom: {
50: '#7288c4',
500: '#1f5bab',
950: '#000000',
},
}SCSS
$custom: #1f5bab; $custom-light: #7288c4; $custom-dark: #000000;
JSON
{
"hex": "#1f5bab",
"rgb": {
"r": 31,
"g": 91,
"b": 171
},
"hsl": {
"h": 214.286,
"s": 69.307,
"l": 39.608
},
"oklch": {
"l": 0.4781,
"c": 0.14206,
"h": 257.2
},
"luminance": 0.10714
}Semantic roles & 50–950 ramp
primary
#1F5BAB
secondary
#C79A5E
accent
#A13CEC
background
#F7F8FC
surface
#EEEFF8
border
#C9CAD1
text
#090B13
muted
#7B7C82