#1A3F71#1A3F71
#1A3F71 is a dark, moderate cyan. Relative luminance 0.050; OKLCH L 36.9% C 0.096 H 256.8°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).
Color values
| HEX | #1A3F71 |
|---|---|
| RGB | rgb(26, 63, 113) |
| HSL | hsl(214, 63%, 27%) |
| HSV | hsv(214, 77%, 44%) |
| CMYK | cmyk(77%, 44.2%, 0%, 55.7%) |
| CIE-LAB | lab(26.64, 5.82, -32.69) |
| CIE-LCH | lch(26.64, 33.21, 280.09°) |
| OKLab | oklab(36.91% -0.0218 -0.0935) |
| OKLCH | oklch(36.91% 0.096 256.8) |
| XYZ | xyz(5.1831, 4.9663, 16.3050) |
| Luminance | 0.0497 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Twilight Blue
#0A437A
ΔE00 2.42
Darkish Blue
#014182
ΔE00 2.63
Marine Blue
#01386A
ΔE00 2.67
Prussian Blue
#004577
ΔE00 3.82
Cobalt (survey)
#1E488F
ΔE00 4.62
Marine
#042E60
ΔE00 5.41
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1A3F71 #714C1A
analogous
#1A6B71 #1A3F71 #211A71
triadic
#1A3F71 #711A3F #3F711A
tetradic
#1A3F71 #711A6B #714C1A #1A7121
square
#1A3F71 #711A6B #714C1A #1A7121
split-complementary
#1A3F71 #71211A #6B711A
monochromatic
#060E19 #0F233F #1A3F71 #255BA3 #3577D0
Accessibility & contrast
On white
10.53
#1A3F71 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.99
#1A3F71 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1A3F71
10.53:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1A3F71 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1A3F71 | 1.00 | 10.53 | 1.99 | 10.53 |
| #FFFFFF | 10.53 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.99 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.53 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#274373
Deuteranopia (green-blind)
#183B70
Tritanopia (blue-blind)
#004B52
Achromatopsia (no color)
#3F3F3F
Design tokens & code
CSS
--color: #1a3f71; /* rgb */ color: rgb(26, 63, 113); /* oklch */ color: oklch(36.9% 0.096 256.8);
Tailwind
colors: {
custom: {
50: '#64739a',
500: '#1a3f71',
950: '#000000',
},
}SCSS
$custom: #1a3f71; $custom-light: #64739a; $custom-dark: #000000;
JSON
{
"hex": "#1a3f71",
"rgb": {
"r": 26,
"g": 63,
"b": 113
},
"hsl": {
"h": 214.483,
"s": 62.59,
"l": 27.255
},
"oklch": {
"l": 0.36914,
"c": 0.09598,
"h": 256.8
},
"luminance": 0.04967
}Semantic roles & 50–950 ramp
primary
#1A3F71
secondary
#A67B41
accent
#A042E6
background
#F6F6F9
surface
#EBECF2
border
#C6C7CC
text
#06080E
muted
#7A7B7E