#1D5583#1D5583
#1D5583 is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.7% C 0.095 H 247.2°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).
Color values
| HEX | #1D5583 |
|---|---|
| RGB | rgb(29, 85, 131) |
| HSL | hsl(207, 64%, 31%) |
| HSV | hsv(207, 78%, 51%) |
| CMYK | cmyk(77.9%, 35.1%, 0%, 48.6%) |
| CIE-LAB | lab(34.79, -1.19, -30.97) |
| CIE-LCH | lch(34.79, 30.99, 267.79°) |
| OKLab | oklab(43.67% -0.0369 -0.088) |
| OKLCH | oklch(43.67% 0.095 247.2) |
| XYZ | xyz(7.8504, 8.3960, 22.6752) |
| Luminance | 0.0840 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Light Navy
#155084
ΔE00 1.91
Deep Sea Blue
#015482
ΔE00 2.05
Light Navy Blue
#2E5A88
ΔE00 2.50
Dusk Blue
#26538D
ΔE00 3.16
Prussian Blue
#004577
ΔE00 5.30
Denim (survey)
#3B638C
ΔE00 5.39
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1D5583 #834B1D
analogous
#1D837E #1D5583 #1D2283
triadic
#1D5583 #831D55 #55831D
tetradic
#1D5583 #7E1D83 #834B1D #22831D
square
#1D5583 #7E1D83 #834B1D #22831D
split-complementary
#1D5583 #831D22 #837E1D
monochromatic
#07141F #123451 #1D5583 #2876B5 #4594D6
Accessibility & contrast
On white
7.84
#1D5583 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.68
#1D5583 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1D5583
7.84:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1D5583 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1D5583 | 1.00 | 7.84 | 2.68 | 7.84 |
| #FFFFFF | 7.84 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.68 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.84 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#405785
Deuteranopia (green-blind)
#314E82
Tritanopia (blue-blind)
#006066
Achromatopsia (no color)
#525252
Design tokens & code
CSS
--color: #1d5583; /* rgb */ color: rgb(29, 85, 131); /* oklch */ color: oklch(43.7% 0.095 247.2);
Tailwind
colors: {
custom: {
50: '#6984a7',
500: '#1d5583',
950: '#000000',
},
}SCSS
$custom: #1d5583; $custom-light: #6984a7; $custom-dark: #000000;
JSON
{
"hex": "#1d5583",
"rgb": {
"r": 29,
"g": 85,
"b": 131
},
"hsl": {
"h": 207.059,
"s": 63.75,
"l": 31.373
},
"oklch": {
"l": 0.43665,
"c": 0.09543,
"h": 247.2
},
"luminance": 0.08397
}Semantic roles & 50–950 ramp
primary
#1D5583
secondary
#B67846
accent
#8C41E7
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#070A0F
muted
#7A7C7F