#1F4F72#1F4F72
#1F4F72 is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.2% C 0.078 H 243.5°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).
Color values
| HEX | #1F4F72 |
|---|---|
| RGB | rgb(31, 79, 114) |
| HSL | hsl(205, 57%, 28%) |
| HSV | hsv(205, 73%, 45%) |
| CMYK | cmyk(72.8%, 30.7%, 0%, 55.3%) |
| CIE-LAB | lab(32.03, -3.63, -24.78) |
| CIE-LCH | lch(32.03, 25.04, 261.66°) |
| OKLab | oklab(41.21% -0.0349 -0.07) |
| OKLCH | oklch(41.21% 0.078 243.5) |
| XYZ | xyz(6.3972, 7.0975, 16.9491) |
| Luminance | 0.0710 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Deep Sea Blue
#015482
ΔE00 3.01
Light Navy
#155084
ΔE00 3.27
Dark Slate Blue
#214761
ΔE00 3.64
Prussian Blue
#004577
ΔE00 4.30
Light Navy Blue
#2E5A88
ΔE00 5.01
Dusk Blue
#26538D
ΔE00 5.06
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F4F72 #72421F
analogous
#1F726B #1F4F72 #1F2672
triadic
#1F4F72 #721F4F #4F721F
tetradic
#1F4F72 #6B1F72 #72421F #26721F
square
#1F4F72 #6B1F72 #72421F #26721F
split-complementary
#1F4F72 #721F26 #726B1F
monochromatic
#071118 #122E42 #1F4F72 #2C70A2 #4091CB
Accessibility & contrast
On white
8.68
#1F4F72 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.42
#1F4F72 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F4F72
8.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F4F72 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F4F72 | 1.00 | 8.68 | 2.42 | 8.68 |
| #FFFFFF | 8.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.42 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#3F5074
Deuteranopia (green-blind)
#344871
Tritanopia (blue-blind)
#00585B
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #1f4f72; /* rgb */ color: rgb(31, 79, 114); /* oklch */ color: oklch(41.2% 0.078 243.5);
Tailwind
colors: {
custom: {
50: '#66809a',
500: '#1f4f72',
950: '#000000',
},
}SCSS
$custom: #1f4f72; $custom-light: #66809a; $custom-dark: #000000;
JSON
{
"hex": "#1f4f72",
"rgb": {
"r": 31,
"g": 79,
"b": 114
},
"hsl": {
"h": 205.301,
"s": 57.241,
"l": 28.431
},
"oklch": {
"l": 0.41206,
"c": 0.07821,
"h": 243.5
},
"luminance": 0.07098
}Semantic roles & 50–950 ramp
primary
#1F4F72
secondary
#A66F47
accent
#8847E0
background
#F6F7F9
surface
#EBEEF2
border
#C6C9CC
text
#060A0E
muted
#7A7C7E