#1B596A#1B596A
#1B596A is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.3% C 0.067 H 219.9°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).
Color values
| HEX | #1B596A |
|---|---|
| RGB | rgb(27, 89, 106) |
| HSL | hsl(193, 59%, 26%) |
| HSV | hsv(193, 75%, 42%) |
| CMYK | cmyk(74.5%, 16%, 0%, 58.4%) |
| CIE-LAB | lab(34.84, -13.36, -15.43) |
| CIE-LCH | lch(34.84, 20.41, 229.12°) |
| OKLab | oklab(43.29% -0.0516 -0.0431) |
| OKLCH | oklch(43.29% 0.067 219.9) |
| XYZ | xyz(6.6248, 8.4176, 14.9085) |
| Luminance | 0.0842 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Petrol
#005F6A
ΔE00 4.93
Deep Teal
#00555A
ΔE00 7.04
Darkslategray
#2F4F4F
ΔE00 8.43
Dark Slate Blue
#214761
ΔE00 9.35
Dark Grey Blue
#29465B
ΔE00 9.45
Dark Teal
#014D4E
ΔE00 9.46
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B596A #6A2C1B
analogous
#1B6A53 #1B596A #1B316A
triadic
#1B596A #6A1B59 #596A1B
tetradic
#1B596A #531B6A #6A2C1B #316A1B
square
#1B596A #531B6A #6A2C1B #316A1B
split-complementary
#1B596A #6A1B31 #6A531B
monochromatic
#061418 #0F3039 #1B596A #27829B #34ABCB
Accessibility & contrast
On white
7.83
#1B596A on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.68
#1B596A on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B596A
7.83:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B596A | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B596A | 1.00 | 7.83 | 2.68 | 7.83 |
| #FFFFFF | 7.83 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.68 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.83 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4F566B
Deuteranopia (green-blind)
#444E6A
Tritanopia (blue-blind)
#005F5E
Achromatopsia (no color)
#525252
Design tokens & code
CSS
--color: #1b596a; /* rgb */ color: rgb(27, 89, 106); /* oklch */ color: oklch(43.3% 0.067 219.9);
Tailwind
colors: {
custom: {
50: '#648894',
500: '#1b596a',
950: '#000000',
},
}SCSS
$custom: #1b596a; $custom-light: #648894; $custom-dark: #000000;
JSON
{
"hex": "#1b596a",
"rgb": {
"r": 27,
"g": 89,
"b": 106
},
"hsl": {
"h": 192.911,
"s": 59.398,
"l": 26.078
},
"oklch": {
"l": 0.43287,
"c": 0.0672,
"h": 219.9
},
"luminance": 0.08418
}Semantic roles & 50–950 ramp
primary
#1B596A
secondary
#9F5642
accent
#6745E3
background
#F6F8F9
surface
#EBEFF1
border
#C6CACB
text
#060B0D
muted
#7A7C7E