#1C388C#1C388C
#1C388C is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.144 H 265.7°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).
Color values
| HEX | #1C388C |
|---|---|
| RGB | rgb(28, 56, 140) |
| HSL | hsl(225, 67%, 33%) |
| HSV | hsv(225, 80%, 55%) |
| CMYK | cmyk(80%, 60%, 0%, 45.1%) |
| CIE-LAB | lab(26.64, 21.97, -49.62) |
| CIE-LCH | lch(26.64, 54.26, 293.88°) |
| OKLab | oklab(37.58% -0.0109 -0.1433) |
| OKLCH | oklch(37.58% 0.144 265.7) |
| XYZ | xyz(6.6250, 4.9679, 25.4156) |
| Luminance | 0.0497 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 4.86
Darkish Blue
#014182
ΔE00 5.54
Cobalt (survey)
#1E488F
ΔE00 5.61
Cobalt
#0047AB
ΔE00 6.20
Blueberry
#464196
ΔE00 6.27
Marine Blue
#01386A
ΔE00 6.58
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1C388C #8C701C
analogous
#1C708C #1C388C #381C8C
triadic
#1C388C #8C1C38 #388C1C
tetradic
#1C388C #8C1C70 #8C701C #1C8C38
square
#1C388C #8C1C70 #8C701C #1C8C38
split-complementary
#1C388C #8C381C #708C1C
monochromatic
#080F26 #122459 #1C388C #264CBF #486DDA
Accessibility & contrast
On white
10.53
#1C388C on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.99
#1C388C on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1C388C
10.53:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1C388C | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1C388C | 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)
#00448F
Deuteranopia (green-blind)
#003A8A
Tritanopia (blue-blind)
#004D5C
Achromatopsia (no color)
#3F3F3F
Design tokens & code
CSS
--color: #1c388c; /* rgb */ color: rgb(28, 56, 140); /* oklch */ color: oklch(37.6% 0.144 265.7);
Tailwind
colors: {
custom: {
50: '#6b6eae',
500: '#1c388c',
950: '#000000',
},
}SCSS
$custom: #1c388c; $custom-light: #6b6eae; $custom-dark: #000000;
JSON
{
"hex": "#1c388c",
"rgb": {
"r": 28,
"g": 56,
"b": 140
},
"hsl": {
"h": 225,
"s": 66.667,
"l": 32.941
},
"oklch": {
"l": 0.37577,
"c": 0.14375,
"h": 265.7
},
"luminance": 0.04969
}Semantic roles & 50–950 ramp
primary
#1C388C
secondary
#BC9F48
accent
#BF3EEA
background
#F7F6FA
surface
#EDEBF4
border
#C8C6CE
text
#080710
muted
#7B7A7F