#1F405F#1F405F
#1F405F is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.2% C 0.067 H 248.8°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).
Color values
| HEX | #1F405F |
|---|---|
| RGB | rgb(31, 64, 95) |
| HSL | hsl(209, 51%, 25%) |
| HSV | hsv(209, 67%, 37%) |
| CMYK | cmyk(67.4%, 32.6%, 0%, 62.7%) |
| CIE-LAB | lab(26.11, -1.12, -21.97) |
| CIE-LCH | lch(26.11, 22.00, 267.08°) |
| OKLab | oklab(36.21% -0.024 -0.062) |
| OKLCH | oklch(36.21% 0.067 248.8) |
| XYZ | xyz(4.4633, 4.7839, 11.5124) |
| Luminance | 0.0478 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dark Slate Blue
#214761
ΔE00 3.83
Prussian Blue
#004577
ΔE00 4.32
Marine Blue
#01386A
ΔE00 4.36
Twilight Blue
#0A437A
ΔE00 4.42
Dark Grey Blue
#29465B
ΔE00 4.52
Darkish Blue
#014182
ΔE00 5.18
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F405F #5F3E1F
analogous
#1F5F5E #1F405F #1F205F
triadic
#1F405F #5F1F40 #405F1F
tetradic
#1F405F #5E1F5F #5F3E1F #205F1F
square
#1F405F #5E1F5F #5F3E1F #205F1F
split-complementary
#1F405F #5F1F20 #5F5E1F
monochromatic
#081017 #102131 #1F405F #2E5F8D #3D7EBB
Accessibility & contrast
On white
10.73
#1F405F on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.96
#1F405F on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F405F
10.73:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F405F | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F405F | 1.00 | 10.73 | 1.96 | 10.73 |
| #FFFFFF | 10.73 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.96 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.73 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#334160
Deuteranopia (green-blind)
#2A3B5E
Tritanopia (blue-blind)
#00474B
Achromatopsia (no color)
#3E3E3E
Design tokens & code
CSS
--color: #1f405f; /* rgb */ color: rgb(31, 64, 95); /* oklch */ color: oklch(36.2% 0.067 248.8);
Tailwind
colors: {
custom: {
50: '#62748c',
500: '#1f405f',
950: '#000000',
},
}SCSS
$custom: #1f405f; $custom-light: #62748c; $custom-dark: #000000;
JSON
{
"hex": "#1f405f",
"rgb": {
"r": 31,
"g": 64,
"b": 95
},
"hsl": {
"h": 209.063,
"s": 50.794,
"l": 24.706
},
"oklch": {
"l": 0.36213,
"c": 0.06651,
"h": 248.8
},
"luminance": 0.04784
}Semantic roles & 50–950 ramp
primary
#1F405F
secondary
#946C46
accent
#924EDA
background
#F6F7F8
surface
#EBEDF0
border
#C6C8CB
text
#05080C
muted
#7A7B7D