#1D5B71#1D5B71
#1D5B71 is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.2% C 0.071 H 225.7°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).
Color values
| HEX | #1D5B71 |
|---|---|
| RGB | rgb(29, 91, 113) |
| HSL | hsl(196, 59%, 28%) |
| HSV | hsv(196, 74%, 44%) |
| CMYK | cmyk(74.3%, 19.5%, 0%, 55.7%) |
| CIE-LAB | lab(35.86, -11.70, -18.21) |
| CIE-LCH | lch(35.86, 21.64, 237.27°) |
| OKLab | oklab(44.22% -0.0497 -0.051) |
| OKLCH | oklch(44.22% 0.071 225.7) |
| XYZ | xyz(7.2272, 8.9348, 16.9633) |
| Luminance | 0.0894 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Petrol
#005F6A
ΔE00 6.78
Ugly Blue
#31668A
ΔE00 7.51
Peacock Blue
#016795
ΔE00 8.25
Dark Slate Blue
#214761
ΔE00 8.39
Deep Sea Blue
#015482
ΔE00 8.52
Dark Grey Blue
#29465B
ΔE00 8.77
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1D5B71 #71331D
analogous
#1D715D #1D5B71 #1D3171
triadic
#1D5B71 #711D5B #5B711D
tetradic
#1D5B71 #5D1D71 #71331D #31711D
square
#1D5B71 #5D1D71 #71331D #31711D
split-complementary
#1D5B71 #711D31 #715D1D
monochromatic
#061418 #113440 #1D5B71 #2982A2 #3CA7CD
Accessibility & contrast
On white
7.53
#1D5B71 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.79
#1D5B71 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1D5B71
7.53:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1D5B71 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1D5B71 | 1.00 | 7.53 | 2.79 | 7.53 |
| #FFFFFF | 7.53 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.79 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.53 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4F5972
Deuteranopia (green-blind)
#435171
Tritanopia (blue-blind)
#006162
Achromatopsia (no color)
#545454
Design tokens & code
CSS
--color: #1d5b71; /* rgb */ color: rgb(29, 91, 113); /* oklch */ color: oklch(44.2% 0.071 225.7);
Tailwind
colors: {
custom: {
50: '#66899a',
500: '#1d5b71',
950: '#000000',
},
}SCSS
$custom: #1d5b71; $custom-light: #66899a; $custom-dark: #000000;
JSON
{
"hex": "#1d5b71",
"rgb": {
"r": 29,
"g": 91,
"b": 113
},
"hsl": {
"h": 195.714,
"s": 59.155,
"l": 27.843
},
"oklch": {
"l": 0.44219,
"c": 0.07123,
"h": 225.7
},
"luminance": 0.08936
}Semantic roles & 50–950 ramp
primary
#1D5B71
secondary
#A55E44
accent
#6F45E2
background
#F6F8F9
surface
#EBF0F2
border
#C6CBCC
text
#060B0E
muted
#7A7C7E