#1D558D#1D558D
#1D558D is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 44.3% C 0.109 H 251.7°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).
Color values
| HEX | #1D558D |
|---|---|
| RGB | rgb(29, 85, 141) |
| HSL | hsl(210, 66%, 33%) |
| HSV | hsv(210, 79%, 55%) |
| CMYK | cmyk(79.4%, 39.7%, 0%, 44.7%) |
| CIE-LAB | lab(35.36, 2.75, -36.19) |
| CIE-LCH | lch(35.36, 36.29, 274.34°) |
| OKLab | oklab(44.29% -0.0341 -0.1033) |
| OKLCH | oklch(44.29% 0.109 251.7) |
| XYZ | xyz(8.5611, 8.6803, 26.4184) |
| Luminance | 0.0868 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dusk Blue
#26538D
ΔE00 1.73
Light Navy
#155084
ΔE00 1.94
Light Navy Blue
#2E5A88
ΔE00 2.17
Deep Sea Blue
#015482
ΔE00 3.62
Denim Blue
#3B5B92
ΔE00 4.39
Cobalt (survey)
#1E488F
ΔE00 5.18
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1D558D #8D551D
analogous
#1D8D8D #1D558D #1D1D8D
triadic
#1D558D #8D1D55 #558D1D
tetradic
#1D558D #8D1D8D #8D551D #1D8D1D
square
#1D558D #8D1D8D #8D551D #1D8D1D
split-complementary
#1D558D #8D1D1D #8D8D1D
monochromatic
#081827 #13365A #1D558D #2774C0 #4B92DA
Accessibility & contrast
On white
7.67
#1D558D on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.74
#1D558D on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1D558D
7.67:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1D558D | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1D558D | 1.00 | 7.67 | 2.74 | 7.67 |
| #FFFFFF | 7.67 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.74 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.67 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#3A598F
Deuteranopia (green-blind)
#294E8C
Tritanopia (blue-blind)
#00626A
Achromatopsia (no color)
#535353
Design tokens & code
CSS
--color: #1d558d; /* rgb */ color: rgb(29, 85, 141); /* oklch */ color: oklch(44.3% 0.109 251.7);
Tailwind
colors: {
custom: {
50: '#6b84af',
500: '#1d558d',
950: '#000000',
},
}SCSS
$custom: #1d558d; $custom-light: #6b84af; $custom-dark: #000000;
JSON
{
"hex": "#1d558d",
"rgb": {
"r": 29,
"g": 85,
"b": 141
},
"hsl": {
"h": 210,
"s": 65.882,
"l": 33.333
},
"oklch": {
"l": 0.44294,
"c": 0.10876,
"h": 251.7
},
"luminance": 0.08681
}Semantic roles & 50–950 ramp
primary
#1D558D
secondary
#BC834A
accent
#943FE9
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#080A10
muted
#7A7C7F