#051C41
Closest named color: Navy Blue (#001146). oklch(23.4% 0.076 259.3), rgb(5, 28, 65).
Aa
White text reads best on this color (16.81:1).
About this color
#051C41 is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.076 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.036 away. White text reads best on it, at 16.81:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.24:1 |
| White text | 16.81:1 |
Values
| HEX | #051C41 |
| RGB | rgb(5, 28, 65) |
| HSL | hsl(217, 86%, 14%) |
| OKLCH | oklch(23.4% 0.076 259.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #051C41 | 16.81:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #051C41 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #051C41 text on white | 16.81:1 | AAA | Lc 103.5 | Preferred for body text |
| #051C41 text on black | 1.24:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DBFB
oklch(88.6% 0.05 258.7)
-
Step 300
300
#9EC2FB
oklch(80.9% 0.09 259.4)
-
Step 400
400
#68A0FA
oklch(70.7% 0.145 259.5)
-
Step 500
500
#3D85F7
oklch(63.1% 0.185 259.4)
-
Step 600
600
#186BE6
oklch(55.5% 0.202 259.4)
-
Step 700
700
#0859C8
oklch(49.2% 0.187 259.2)
-
Step 800
800
#0D49A1
oklch(42.6% 0.154 259.3)
-
Step 900
900
#143E80
oklch(37.6% 0.121 259.5)
-
Step 950
950 (this color)
#051C41
oklch(23.4% 0.076 259.3)
#051C41 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #052042 | 0.013 |
| Deuteranopia (no green cones) | #001B40 | 0.008 |
| Tritanopia (no blue cones) | #00252B | 0.058 |
| Achromatopsia (no color) | #1D1D1D | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051C41
#051C41
oklch(23.4% 0.076 259.3)
- #2A1B00
#2A1B00
oklch(23.5% 0.049 80)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #051C41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.036
- Rich Black #0D1B2A ΔE 0.045
- Oxford Blue #1B263B ΔE 0.049
- Dark #1B2431 ΔE 0.054
- Night Blue #040348 ΔE 0.063
- Dark Indigo #1F0954 ΔE 0.064
- Jet #212529 ΔE 0.073
- Darkblue #030764 ΔE 0.075
Use #051C41 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.