#031C4E
Closest named color: Navy Blue (#001146). oklch(24.6% 0.098 261.4), rgb(3, 28, 78).
Aa
White text reads best on this color (16.40:1).
About this color
#031C4E is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.098 and its hue 261°. 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 16.40:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.27:1 |
| White text | 16.40:1 |
Values
| HEX | #031C4E |
| RGB | rgb(3, 28, 78) |
| HSL | hsl(220, 93%, 16%) |
| OKLCH | oklch(24.6% 0.098 261.4) |
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 #031C4E | 16.40:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #031C4E | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #031C4E text on white | 16.40:1 | AAA | Lc 102.9 | Preferred for body text |
| #031C4E text on black | 1.27:1 | 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
#DFEBFF
oklch(93.7% 0.03 260.7)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#699FFF
oklch(70.8% 0.152 261.1)
-
Step 500
500
#3F82FF
oklch(63.1% 0.198 261.5)
-
Step 600
600
#0262FF
oklch(55.6% 0.245 261.4)
-
Step 700
700
#0052D9
oklch(49.2% 0.217 261.4)
-
Step 800
800
#0042B4
oklch(42.7% 0.19 261.5)
-
Step 900
900
#083991
oklch(37.7% 0.154 261.4)
-
Step 950
950 (this color)
#031C4E
oklch(24.6% 0.098 261.4)
#031C4E 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) | #002350 | 0.021 |
| Deuteranopia (no green cones) | #001C4D | 0.004 |
| Tritanopia (no blue cones) | #002931 | 0.076 |
| Achromatopsia (no color) | #1F1F1F | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031C4E
#031C4E
oklch(24.6% 0.098 261.4)
- #2D1E00
#2D1E00
oklch(24.7% 0.051 81.9)
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 #031C4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.036
- Dark Indigo #1F0954 ΔE 0.053
- Darkblue #030764 ΔE 0.054
- Oxford Blue #1B263B ΔE 0.060
- Night Blue #040348 ΔE 0.061
- Marine #042E60 ΔE 0.062
- Midnight Blue #191970 ΔE 0.067
- Dark Royal Blue #02066F ΔE 0.068
Use #031C4E 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.