#1C3979#1C3979
#1C3979 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.2% C 0.115 H 263.4°. Best body text is #FFFFFF at 10.99:1 contrast (WCAG AA passes).
Color values
| HEX | #1C3979 |
|---|---|
| RGB | rgb(28, 57, 121) |
| HSL | hsl(221, 62%, 29%) |
| HSV | hsv(221, 77%, 47%) |
| CMYK | cmyk(76.9%, 52.9%, 0%, 52.5%) |
| CIE-LAB | lab(25.42, 13.58, -39.72) |
| CIE-LCH | lch(25.42, 41.97, 288.88°) |
| OKLab | oklab(36.18% -0.0132 -0.1142) |
| OKLCH | oklch(36.18% 0.115 263.4) |
| XYZ | xyz(5.3920, 4.5530, 18.6801) |
| Luminance | 0.0455 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Marine Blue
#01386A
ΔE00 4.08
Darkish Blue
#014182
ΔE00 4.24
Marine
#042E60
ΔE00 4.80
Twilight Blue
#0A437A
ΔE00 5.02
Cobalt (survey)
#1E488F
ΔE00 5.42
Prussian Blue
#004577
ΔE00 6.62
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1C3979 #795C1C
analogous
#1C6879 #1C3979 #2E1C79
triadic
#1C3979 #791C39 #39791C
tetradic
#1C3979 #791C68 #795C1C #1C792E
square
#1C3979 #791C68 #795C1C #1C792E
split-complementary
#1C3979 #792E1C #68791C
monochromatic
#060C19 #102247 #1C3979 #2850AB #3D6CD2
Accessibility & contrast
On white
10.99
#1C3979 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.91
#1C3979 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1C3979
10.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1C3979 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1C3979 | 1.00 | 10.99 | 1.91 | 10.99 |
| #FFFFFF | 10.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.91 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#11417B
Deuteranopia (green-blind)
#003878
Tritanopia (blue-blind)
#004853
Achromatopsia (no color)
#3C3C3C
Design tokens & code
CSS
--color: #1c3979; /* rgb */ color: rgb(28, 57, 121); /* oklch */ color: oklch(36.2% 0.115 263.4);
Tailwind
colors: {
custom: {
50: '#666ea0',
500: '#1c3979',
950: '#000000',
},
}SCSS
$custom: #1c3979; $custom-light: #666ea0; $custom-dark: #000000;
JSON
{
"hex": "#1c3979",
"rgb": {
"r": 28,
"g": 57,
"b": 121
},
"hsl": {
"h": 221.29,
"s": 62.416,
"l": 29.216
},
"oklch": {
"l": 0.36179,
"c": 0.11496,
"h": 263.4
},
"luminance": 0.04554
}Semantic roles & 50–950 ramp
primary
#1C3979
secondary
#AD8C44
accent
#B342E5
background
#F6F6F9
surface
#EBEBF2
border
#C6C6CC
text
#07070F
muted
#7A7A7E