#1D5579#1D5579
#1D5579 is a dark, moderate cyan. Relative luminance 0.081; OKLCH L 43.1% C 0.083 H 241.0°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).
Color values
| HEX | #1D5579 |
|---|---|
| RGB | rgb(29, 85, 121) |
| HSL | hsl(203, 61%, 29%) |
| HSV | hsv(203, 76%, 47%) |
| CMYK | cmyk(76%, 29.8%, 0%, 52.5%) |
| CIE-LAB | lab(34.27, -5.06, -25.63) |
| CIE-LCH | lch(34.27, 26.13, 258.82°) |
| OKLab | oklab(43.08% -0.0402 -0.0724) |
| OKLCH | oklch(43.08% 0.083 241) |
| XYZ | xyz(7.2050, 8.1379, 19.2765) |
| Luminance | 0.0814 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Deep Sea Blue
#015482
ΔE00 2.09
Light Navy
#155084
ΔE00 3.98
Light Navy Blue
#2E5A88
ΔE00 4.39
Dark Slate Blue
#214761
ΔE00 5.31
Dusk Blue
#26538D
ΔE00 5.48
Ugly Blue
#31668A
ΔE00 5.94
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1D5579 #79411D
analogous
#1D796F #1D5579 #1D2779
triadic
#1D5579 #791D55 #55791D
tetradic
#1D5579 #6F1D79 #79411D #27791D
square
#1D5579 #6F1D79 #79411D #27791D
split-complementary
#1D5579 #791D27 #796F1D
monochromatic
#061119 #113248 #1D5579 #2978AA #3F98D1
Accessibility & contrast
On white
7.99
#1D5579 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#1D5579 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1D5579
7.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1D5579 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1D5579 | 1.00 | 7.99 | 2.63 | 7.99 |
| #FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#44557B
Deuteranopia (green-blind)
#384D78
Tritanopia (blue-blind)
#005E62
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #1d5579; /* rgb */ color: rgb(29, 85, 121); /* oklch */ color: oklch(43.1% 0.083 241.0);
Tailwind
colors: {
custom: {
50: '#6784a0',
500: '#1d5579',
950: '#000000',
},
}SCSS
$custom: #1d5579; $custom-light: #6784a0; $custom-dark: #000000;
JSON
{
"hex": "#1d5579",
"rgb": {
"r": 29,
"g": 85,
"b": 121
},
"hsl": {
"h": 203.478,
"s": 61.333,
"l": 29.412
},
"oklch": {
"l": 0.43077,
"c": 0.08284,
"h": 241
},
"luminance": 0.08139
}Semantic roles & 50–950 ramp
primary
#1D5579
secondary
#AD6E45
accent
#8243E4
background
#F6F8F9
surface
#EBEFF2
border
#C6CACC
text
#070B0E
muted
#7A7C7E