#1D537B#1D537B
#1D537B is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.7% C 0.087 H 244.5°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).
Color values
| HEX | #1D537B |
|---|---|
| RGB | rgb(29, 83, 123) |
| HSL | hsl(206, 62%, 30%) |
| HSV | hsv(206, 76%, 48%) |
| CMYK | cmyk(76.4%, 32.5%, 0%, 51.8%) |
| CIE-LAB | lab(33.73, -3.03, -27.72) |
| CIE-LCH | lch(33.73, 27.89, 263.76°) |
| OKLab | oklab(42.68% -0.0374 -0.0785) |
| OKLCH | oklch(42.68% 0.087 244.5) |
| XYZ | xyz(7.1737, 7.8770, 19.8774) |
| Luminance | 0.0788 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Deep Sea Blue
#015482
ΔE00 1.72
Light Navy
#155084
ΔE00 2.46
Light Navy Blue
#2E5A88
ΔE00 3.62
Dusk Blue
#26538D
ΔE00 4.17
Prussian Blue
#004577
ΔE00 4.92
Dark Slate Blue
#214761
ΔE00 5.35
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1D537B #7B451D
analogous
#1D7B74 #1D537B #1D247B
triadic
#1D537B #7B1D53 #537B1D
tetradic
#1D537B #741D7B #7B451D #247B1D
square
#1D537B #741D7B #7B451D #247B1D
split-complementary
#1D537B #7B1D24 #7B741D
monochromatic
#061119 #113249 #1D537B #2974AD #4094D2
Accessibility & contrast
On white
8.15
#1D537B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.58
#1D537B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1D537B
8.15:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1D537B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1D537B | 1.00 | 8.15 | 2.58 | 8.15 |
| #FFFFFF | 8.15 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.58 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.15 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#41547D
Deuteranopia (green-blind)
#344B7A
Tritanopia (blue-blind)
#005D61
Achromatopsia (no color)
#4F4F4F
Design tokens & code
CSS
--color: #1d537b; /* rgb */ color: rgb(29, 83, 123); /* oklch */ color: oklch(42.7% 0.087 244.5);
Tailwind
colors: {
custom: {
50: '#6783a1',
500: '#1d537b',
950: '#000000',
},
}SCSS
$custom: #1d537b; $custom-light: #6783a1; $custom-dark: #000000;
JSON
{
"hex": "#1d537b",
"rgb": {
"r": 29,
"g": 83,
"b": 123
},
"hsl": {
"h": 205.532,
"s": 61.842,
"l": 29.804
},
"oklch": {
"l": 0.42682,
"c": 0.087,
"h": 244.5
},
"luminance": 0.07878
}Semantic roles & 50–950 ramp
primary
#1D537B
secondary
#AF7245
accent
#8843E5
background
#F6F7F9
surface
#EBEEF2
border
#C6C9CC
text
#070A0F
muted
#7A7C7E