#1B445D#1B445D
#1B445D is a dark, moderate cyan. Relative luminance 0.052; OKLCH L 37.0% C 0.063 H 238.5°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).
Color values
| HEX | #1B445D |
|---|---|
| RGB | rgb(27, 68, 93) |
| HSL | hsl(203, 55%, 24%) |
| HSV | hsv(203, 71%, 36%) |
| CMYK | cmyk(71%, 26.9%, 0%, 63.5%) |
| CIE-LAB | lab(27.18, -5.31, -19.02) |
| CIE-LCH | lch(27.18, 19.75, 254.41°) |
| OKLab | oklab(36.98% -0.0327 -0.0535) |
| OKLCH | oklch(36.98% 0.063 238.5) |
| XYZ | xyz(4.4941, 5.1571, 11.1124) |
| Luminance | 0.0516 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dark Slate Blue
#214761
ΔE00 1.33
Dark Grey Blue
#29465B
ΔE00 2.21
Dark Blue Grey
#1F3B4D
ΔE00 3.81
Prussian Blue
#004577
ΔE00 5.98
Twilight Blue
#0A437A
ΔE00 6.75
Charcoal
#36454F
ΔE00 6.93
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B445D #5D341B
analogous
#1B5D55 #1B445D #1B235D
triadic
#1B445D #5D1B44 #445D1B
tetradic
#1B445D #551B5D #5D341B #235D1B
square
#1B445D #551B5D #5D341B #235D1B
split-complementary
#1B445D #5D1B23 #5D551B
monochromatic
#071118 #0D212E #1B445D #29678C #3789BC
Accessibility & contrast
On white
10.34
#1B445D on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.03
#1B445D on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B445D
10.34:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B445D | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B445D | 1.00 | 10.34 | 2.03 | 10.34 |
| #FFFFFF | 10.34 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.03 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.34 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#38445E
Deuteranopia (green-blind)
#2F3D5D
Tritanopia (blue-blind)
#004A4D
Achromatopsia (no color)
#404040
Design tokens & code
CSS
--color: #1b445d; /* rgb */ color: rgb(27, 68, 93); /* oklch */ color: oklch(37.0% 0.063 238.5);
Tailwind
colors: {
custom: {
50: '#60778b',
500: '#1b445d',
950: '#000000',
},
}SCSS
$custom: #1b445d; $custom-light: #60778b; $custom-dark: #000000;
JSON
{
"hex": "#1b445d",
"rgb": {
"r": 27,
"g": 68,
"b": 93
},
"hsl": {
"h": 202.727,
"s": 55,
"l": 23.529
},
"oklch": {
"l": 0.36976,
"c": 0.0627,
"h": 238.5
},
"luminance": 0.05158
}Semantic roles & 50–950 ramp
primary
#1B445D
secondary
#936041
accent
#8249DE
background
#F5F7F8
surface
#EAEDF0
border
#C6C8CB
text
#05080C
muted
#797B7D