#051039
Closest named color: Navy Blue (#001146). oklch(19.6% 0.081 266.2), rgb(5, 16, 57).
Aa
White text reads best on this color (18.42:1).
About this color
#051039 is a very dark, moderately saturated blue. In OKLCH its lightness is 20%, its chroma 0.081 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.026 away. White text reads best on it, at 18.42:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.13:1 |
| White text | 18.42:1 |
Values
| HEX | #051039 |
| RGB | rgb(5, 16, 57) |
| HSL | hsl(227, 84%, 12%) |
| OKLCH | oklch(19.6% 0.081 266.2) |
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 #051039 | 18.42:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #051039 | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #051039 text on white | 18.42:1 | AAA | Lc 104.8 | Preferred for body text |
| #051039 text on black | 1.13:1 | 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
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C9D9FE
oklch(88.5% 0.054 266.8)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#749CFF
oklch(70.8% 0.152 266)
-
Step 500
500
#517FFF
oklch(63.2% 0.197 266)
-
Step 600
600
#3864EE
oklch(55.7% 0.213 266)
-
Step 700
700
#2C51CF
oklch(49% 0.199 266.3)
-
Step 800
800
#2444A7
oklch(42.7% 0.164 265.9)
-
Step 900
900
#213A85
oklch(37.6% 0.13 266.3)
-
Step 950
950 (this color)
#051039
oklch(19.6% 0.081 266.2)
#051039 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) | #00173A | 0.021 |
| Deuteranopia (no green cones) | #001238 | 0.009 |
| Tritanopia (no blue cones) | #001B22 | 0.064 |
| Achromatopsia (no color) | #141414 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051039
#051039
oklch(19.6% 0.081 266.2)
- #1D1400
#1D1400
oklch(19.7% 0.04 87.9)
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 #051039, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.026
- Night Blue #040348 ΔE 0.039
- Dark Navy #000435 ΔE 0.039
- Very Dark Blue #000133 ΔE 0.051
- Rich Black #0D1B2A ΔE 0.052
- Dark Navy Blue #00022E ΔE 0.054
- Midnight #03012D ΔE 0.055
- Rich Navy #001219 ΔE 0.068
Use #051039 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.