#031440
Closest named color: Navy Blue (#001146). oklch(21.2% 0.087 263.1), rgb(3, 20, 64).
Aa
White text reads best on this color (17.82:1).
About this color
#031440 is a very dark, moderately saturated blue. In OKLCH its lightness is 21%, its chroma 0.087 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.015 away. White text reads best on it, at 17.82:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.17:1 |
| White text | 17.82:1 |
Values
| HEX | #031440 |
| RGB | rgb(3, 20, 64) |
| HSL | hsl(223, 91%, 13%) |
| OKLCH | oklch(21.2% 0.087 263.1) |
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 #031440 | 17.82:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #031440 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #031440 text on white | 17.82:1 | AAA | Lc 104.3 | Preferred for body text |
| #031440 text on black | 1.17:1 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#DFEAFF
oklch(93.5% 0.031 263.5)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6D9EFF
oklch(70.8% 0.152 262.8)
-
Step 500
500
#4681FF
oklch(63.1% 0.198 263.1)
-
Step 600
600
#2263F7
oklch(55.6% 0.231 263.1)
-
Step 700
700
#1651D7
oklch(49.1% 0.214 263)
-
Step 800
800
#1443AE
oklch(42.6% 0.178 263.1)
-
Step 900
900
#173B89
oklch(37.8% 0.137 262.9)
-
Step 950
950 (this color)
#031440
oklch(21.2% 0.087 263.1)
#031440 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) | #001B41 | 0.021 |
| Deuteranopia (no green cones) | #00153F | 0.005 |
| Tritanopia (no blue cones) | #001F27 | 0.066 |
| Achromatopsia (no color) | #181818 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031440
#031440
oklch(21.2% 0.087 263.1)
- #221600
#221600
oklch(21% 0.043 82.5)
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 #031440, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.015
- Night Blue #040348 ΔE 0.040
- Dark Navy #000435 ΔE 0.053
- Rich Black #0D1B2A ΔE 0.053
- Dark Indigo #1F0954 ΔE 0.060
- Very Dark Blue #000133 ΔE 0.065
- Darkblue #030764 ΔE 0.068
- Dark Navy Blue #00022E ΔE 0.069
Use #031440 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.