#1C4F99#1C4F99
#1C4F99 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 43.7% C 0.133 H 258.3°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).
Color values
| HEX | #1C4F99 |
|---|---|
| RGB | rgb(28, 79, 153) |
| HSL | hsl(216, 69%, 35%) |
| HSV | hsv(216, 82%, 60%) |
| CMYK | cmyk(81.7%, 48.4%, 0%, 40%) |
| CIE-LAB | lab(34.27, 11.41, -45.22) |
| CIE-LCH | lch(34.27, 46.64, 284.17°) |
| OKLab | oklab(43.68% -0.0269 -0.13) |
| OKLCH | oklch(43.68% 0.133 258.3) |
| XYZ | xyz(9.0225, 8.1377, 31.2260) |
| Luminance | 0.0814 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dusk Blue
#26538D
ΔE00 2.11
Cobalt (survey)
#1E488F
ΔE00 2.62
Light Navy
#155084
ΔE00 3.68
Cobalt
#0047AB
ΔE00 3.79
Sapphire
#0F52BA
ΔE00 4.21
Light Navy Blue
#2E5A88
ΔE00 4.51
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1C4F99 #99661C
analogous
#1C8D99 #1C4F99 #271C99
triadic
#1C4F99 #991C4F #4F991C
tetradic
#1C4F99 #991C8D #99661C #1C9927
square
#1C4F99 #991C8D #99661C #1C9927
split-complementary
#1C4F99 #99271C #8D991C
monochromatic
#091A32 #133465 #1C4F99 #256ACD #508BDF
Accessibility & contrast
On white
7.99
#1C4F99 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#1C4F99 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1C4F99
7.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1C4F99 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1C4F99 | 1.00 | 7.99 | 2.63 | 7.99 |
| #FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#25579C
Deuteranopia (green-blind)
#004B98
Tritanopia (blue-blind)
#00616C
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #1c4f99; /* rgb */ color: rgb(28, 79, 153); /* oklch */ color: oklch(43.7% 0.133 258.3);
Tailwind
colors: {
custom: {
50: '#6d7fb7',
500: '#1c4f99',
950: '#000000',
},
}SCSS
$custom: #1c4f99; $custom-light: #6d7fb7; $custom-dark: #000000;
JSON
{
"hex": "#1c4f99",
"rgb": {
"r": 28,
"g": 79,
"b": 153
},
"hsl": {
"h": 215.52,
"s": 69.061,
"l": 35.49
},
"oklch": {
"l": 0.43683,
"c": 0.13271,
"h": 258.3
},
"luminance": 0.08139
}Semantic roles & 50–950 ramp
primary
#1C4F99
secondary
#C2934F
accent
#A43CEC
background
#F7F7FB
surface
#EDEEF6
border
#C8C9D0
text
#080A11
muted
#7B7C80