#051E4B
Closest named color: Navy Blue (#001146). oklch(24.9% 0.089 260.7), rgb(5, 30, 75).
Aa
White text reads best on this color (16.23:1).
About this color
#051E4B is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.089 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.040 away. White text reads best on it, at 16.23:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.29:1 |
| White text | 16.23:1 |
Values
| HEX | #051E4B |
| RGB | rgb(5, 30, 75) |
| HSL | hsl(219, 88%, 16%) |
| OKLCH | oklch(24.9% 0.089 260.7) |
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 #051E4B | 16.23:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #051E4B | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #051E4B text on white | 16.23:1 | AAA | Lc 102.8 | Preferred for body text |
| #051E4B text on black | 1.29:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFF
oklch(93.6% 0.031 258.9)
-
Step 200
200
#C4DAFF
oklch(88.4% 0.057 260.8)
-
Step 300
300
#9DC2FF
oklch(81% 0.096 260.2)
-
Step 400
400
#679FFF
oklch(70.7% 0.153 260.6)
-
Step 500
500
#3C83FF
oklch(63.2% 0.198 260.7)
-
Step 600
600
#0265F9
oklch(55.7% 0.235 260.7)
-
Step 700
700
#0054D4
oklch(49.1% 0.209 260.7)
-
Step 800
800
#0044AF
oklch(42.6% 0.181 260.7)
-
Step 900
900
#0D3B8B
oklch(37.7% 0.142 260.9)
-
Step 950
950 (this color)
#051E4B
oklch(24.9% 0.089 260.7)
#051E4B 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) | #00244D | 0.018 |
| Deuteranopia (no green cones) | #001D4A | 0.007 |
| Tritanopia (no blue cones) | #002931 | 0.068 |
| Achromatopsia (no color) | #202020 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051E4B
#051E4B
oklch(24.9% 0.089 260.7)
- #2E1E00
#2E1E00
oklch(24.9% 0.051 80.2)
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 #051E4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.051
- Dark Indigo #1F0954 ΔE 0.057
- Marine #042E60 ΔE 0.060
- Dark #1B2431 ΔE 0.062
- Rich Black #0D1B2A ΔE 0.063
- Darkblue #030764 ΔE 0.063
- Night Blue #040348 ΔE 0.067
Use #051E4B 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.