#031A3F
Closest named color: Navy Blue (#001146). oklch(22.6% 0.077 258.8), rgb(3, 26, 63).
Aa
White text reads best on this color (17.16:1).
About this color
#031A3F is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.077 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.030 away. White text reads best on it, at 17.16:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.22:1 |
| White text | 17.16:1 |
Values
| HEX | #031A3F |
| RGB | rgb(3, 26, 63) |
| HSL | hsl(217, 91%, 13%) |
| OKLCH | oklch(22.6% 0.077 258.8) |
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 #031A3F | 17.16:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #031A3F | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #031A3F text on white | 17.16:1 | AAA | Lc 103.8 | Preferred for body text |
| #031A3F text on black | 1.22:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9DC2FC
oklch(80.8% 0.092 259.2)
-
Step 400
400
#66A0FA
oklch(70.6% 0.146 258.9)
-
Step 500
500
#3A85F8
oklch(63% 0.187 259)
-
Step 600
600
#126CE7
oklch(55.7% 0.203 258.8)
-
Step 700
700
#0159C8
oklch(49.1% 0.187 258.8)
-
Step 800
800
#0949A2
oklch(42.6% 0.156 259)
-
Step 900
900
#123F81
oklch(37.8% 0.122 258.7)
-
Step 950
950 (this color)
#031A3F
oklch(22.6% 0.077 258.8)
#031A3F 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) | #031E40 | 0.013 |
| Deuteranopia (no green cones) | #00193E | 0.006 |
| Tritanopia (no blue cones) | #002329 | 0.059 |
| Achromatopsia (no color) | #1B1B1B | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031A3F
#031A3F
oklch(22.6% 0.077 258.8)
- #281900
#281900
oklch(22.7% 0.047 78.6)
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 #031A3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.030
- Rich Black #0D1B2A ΔE 0.043
- Oxford Blue #1B263B ΔE 0.055
- Night Blue #040348 ΔE 0.058
- Dark #1B2431 ΔE 0.059
- Dark Indigo #1F0954 ΔE 0.065
- Dark Navy #000435 ΔE 0.069
- Darkblue #030764 ΔE 0.076
Use #031A3F 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.