bluecool
Navy Blue #1B2A4A
A very dark blue, near-black, named after naval uniforms. The default "formal blue".
Use cases: Corporate UI · Formal identity
Color values
| Format | Value | |
|---|---|---|
| HEX | #1B2A4A | |
| RGB | rgb(27, 42, 74) | |
| HSL | hsl(221, 47%, 20%) | |
| HSV | hsv(221, 64%, 29%) | |
| CMYK | cmyk(63.5%, 43.2%, 0%, 71%) | |
| XYZ | xyz(2.5156, 2.3832, 6.8047) | |
| CIE-LAB | lab(17.4, 5.1, -21.8) | |
| Luminance | 0.024 (WCAG relative) |
/* Navy Blue */
color: #1b2a4a;
background-color: #1b2a4a;
Shade scale
Perceptual 50–950 scale, interpolated in CIE-LAB. Step 500 is the base color. Edit in the shade generator →
Shades (toward black)
#182643 #16223b #131d34 #10192c #0e1525 #0b111e #080d16 #05080f #030407 #000000
Tints (toward white)
#323f5c #49556e #5f6a80 #767f92 #8d95a5 #a4aab7 #bbbfc9 #d1d4db #e8eaed #ffffff
Tones (toward gray)
#25334f #2f3b55 #39445a #434c60 #4e5565 #585e6a #626670 #6c6f75 #76777b #808080
Color harmonies
Complementary
Edit in generator →#1B2A4A
#4A3B1B
#1b2a4a #4a3b1b
Analogous
Edit in generator →#1B424A
#1B2A4A
#231B4A
#1b424a #1b2a4a #231b4a
Triadic
Edit in generator →#1B2A4A
#4A1B2A
#2A4A1B
#1b2a4a #4a1b2a #2a4a1b
Tetradic
Edit in generator →#1B2A4A
#4A1B42
#4A3B1B
#1B4A23
#1b2a4a #4a1b42 #4a3b1b #1b4a23
Split Complementary
Edit in generator →#1B2A4A
#4A231B
#424A1B
#1b2a4a #4a231b #424a1b
Monochromatic
Edit in generator →#080D16
#0B111D
#1B2A4A
#2B4377
#3C5DA4
#080d16 #0b111d #1b2a4a #2b4377 #3c5da4
Accessibility & contrast
14.22
#1B2A4A on #FFFFFF
AA text ✓AA large ✓AAA text ✓UI 3:1 ✓
1.48
#1B2A4A on #000000
AA text ✗AA large ✗AAA text ✗UI 3:1 ✗
Best text on navy blue
14.22
#FFFFFF text
WCAG 2.1: AA needs ≥4.5:1 for normal text, ≥3:1 for large text and UI components; AAA needs ≥7:1 / ≥4.5:1.
Color blindness preview
Simulation using the Machado et al. (2009) physiological model, severity 1.0. This is an approximation of perception — not a medical assessment.
Closest named colors
Nearest matches by CIEDE2000 perceptual distance (ΔE₀₀).
| Color | Name | ΔE₀₀ |
|---|---|---|
| Midnight Blue #191970 | 10.96 | |
| Gunmetal #2A3439 | 13.59 | |
| Charcoal #36454F | 13.98 | |
| Onyx #353839 | 15.32 | |
| Cobalt #0047AB | 15.86 | |
| Indigo #4B0082 | 18.00 |
Related colors
Palettes with navy blue
Values computed from the sRGB color model. CMYK is the naive sRGB conversion without an ICC profile. RGB percentages may differ between color-managed applications.