#1F88AB#1F88AB
#1F88AB is a mid, moderate cyan. Relative luminance 0.208; OKLCH L 58.6% C 0.104 H 226.1°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).
Color values
| HEX | #1F88AB |
|---|---|
| RGB | rgb(31, 136, 171) |
| HSL | hsl(195, 69%, 40%) |
| HSV | hsv(195, 82%, 67%) |
| CMYK | cmyk(81.9%, 20.5%, 0%, 32.9%) |
| CIE-LAB | lab(52.77, -16.29, -26.62) |
| CIE-LCH | lch(52.77, 31.21, 238.54°) |
| OKLab | oklab(58.6% -0.0719 -0.0748) |
| OKLCH | oklch(58.6% 0.104 226.1) |
| XYZ | xyz(16.7169, 20.8378, 41.6612) |
| Luminance | 0.2084 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dirty Blue
#3F829D
ΔE00 3.34
Teal Blue
#01889F
ΔE00 4.96
Cerulean
#007BA7
ΔE00 5.64
Ocean
#017B92
ΔE00 6.84
Sea Blue
#047495
ΔE00 7.59
Nice Blue
#107AB0
ΔE00 7.82
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F88AB #AB421F
analogous
#1FAB88 #1F88AB #1F42AB
triadic
#1F88AB #AB1F88 #88AB1F
tetradic
#1F88AB #881FAB #AB421F #42AB1F
square
#1F88AB #881FAB #AB421F #42AB1F
split-complementary
#1F88AB #AB1F42 #AB881F
monochromatic
#0C3643 #165F77 #1F88AB #2EAED9 #62C2E3
Accessibility & contrast
On white
4.06
#1F88AB on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.17
#1F88AB on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #1F88AB
5.17:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F88AB | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##1F88AB | 1.00 | 4.06 | 5.17 | 5.17 |
| #FFFFFF | 4.06 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.17 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.17 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#7585AD
Deuteranopia (green-blind)
#6378AB
Tritanopia (blue-blind)
#009294
Achromatopsia (no color)
#7E7E7E
Design tokens & code
CSS
--color: #1f88ab; /* rgb */ color: rgb(31, 136, 171); /* oklch */ color: oklch(58.6% 0.104 226.1);
Tailwind
colors: {
custom: {
50: '#74aac4',
500: '#1f88ab',
950: '#000000',
},
}SCSS
$custom: #1f88ab; $custom-light: #74aac4; $custom-dark: #000000;
JSON
{
"hex": "#1f88ab",
"rgb": {
"r": 31,
"g": 136,
"b": 171
},
"hsl": {
"h": 195,
"s": 69.307,
"l": 39.608
},
"oklch": {
"l": 0.58599,
"c": 0.10376,
"h": 226.1
},
"luminance": 0.2084
}Semantic roles & 50–950 ramp
primary
#1F88AB
secondary
#C7795E
accent
#683CEC
background
#F7FAFC
surface
#EEF4F8
border
#C9CED1
text
#0A1012
muted
#7C7F81