#051F4A
Closest named color: Navy Blue (#001146). oklch(25% 0.086 259.8), rgb(5, 31, 74).
Aa
White text reads best on this color (16.13:1).
About this color
#051F4A is a dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.086 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.043 away. White text reads best on it, at 16.13:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.30:1 |
| White text | 16.13:1 |
Values
| HEX | #051F4A |
| RGB | rgb(5, 31, 74) |
| HSL | hsl(217, 87%, 15%) |
| OKLCH | oklch(25% 0.086 259.8) |
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 #051F4A | 16.13:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #051F4A | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #051F4A text on white | 16.13:1 | AAA | Lc 102.8 | Preferred for body text |
| #051F4A text on black | 1.30:1 | 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
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C4DBFF
oklch(88.6% 0.056 259.3)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#659FFF
oklch(70.6% 0.154 260)
-
Step 500
500
#3783FF
oklch(63% 0.199 259.9)
-
Step 600
600
#0067F3
oklch(55.5% 0.225 259.9)
-
Step 700
700
#0057CE
oklch(49.2% 0.198 259.7)
-
Step 800
800
#0046AB
oklch(42.6% 0.173 259.9)
-
Step 900
900
#0C3C88
oklch(37.6% 0.137 260)
-
Step 950
950 (this color)
#051F4A
oklch(25% 0.086 259.8)
#051F4A 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) | #02244C | 0.015 |
| Deuteranopia (no green cones) | #001E49 | 0.007 |
| Tritanopia (no blue cones) | #002A31 | 0.066 |
| Achromatopsia (no color) | #212121 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051F4A
#051F4A
oklch(25% 0.086 259.8)
- #2F1E00
#2F1E00
oklch(25% 0.052 78.5)
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 #051F4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.048
- Marine #042E60 ΔE 0.059
- Dark #1B2431 ΔE 0.059
- Dark Indigo #1F0954 ΔE 0.060
- Rich Black #0D1B2A ΔE 0.061
- Darkblue #030764 ΔE 0.067
- Night Blue #040348 ΔE 0.070
Use #051F4A 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.