#031437
Closest named color: Navy Blue (#001146). oklch(20.3% 0.073 261.1), rgb(3, 20, 55).
Aa
White text reads best on this color (18.11:1).
About this color
#031437 is a very dark, moderately saturated blue. In OKLCH its lightness is 20%, its chroma 0.073 and its hue 261°. 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 18.11:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.15:1 |
| White text | 18.11:1 |
Values
| HEX | #031437 |
| RGB | rgb(3, 20, 55) |
| HSL | hsl(220, 90%, 11%) |
| OKLCH | oklch(20.3% 0.073 261.1) |
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 #031437 | 18.11:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #031437 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #031437 text on white | 18.11:1 | AAA | Lc 104.6 | Preferred for body text |
| #031437 text on black | 1.15:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A1C2F9
oklch(81% 0.086 260.5)
-
Step 400
400
#6EA0F6
oklch(70.8% 0.138 260.7)
-
Step 500
500
#4885F2
oklch(63.1% 0.176 261)
-
Step 600
600
#2A6BE1
oklch(55.5% 0.192 261.2)
-
Step 700
700
#1D59C4
oklch(49.2% 0.178 261)
-
Step 800
800
#1A499E
oklch(42.7% 0.148 261.1)
-
Step 900
900
#1B3E7E
oklch(37.7% 0.116 261.2)
-
Step 950
950 (this color)
#031437
oklch(20.3% 0.073 261.1)
#031437 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) | #001838 | 0.013 |
| Deuteranopia (no green cones) | #001436 | 0.005 |
| Tritanopia (no blue cones) | #001D23 | 0.056 |
| Achromatopsia (no color) | #161616 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031437
#031437
oklch(20.3% 0.073 261.1)
- #201400
#201400
oklch(20.2% 0.042 81)
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 #031437, 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 0.041
- Dark Navy #000435 ΔE 0.049
- Night Blue #040348 ΔE 0.050
- Very Dark Blue #000133 ΔE 0.060
- Rich Navy #001219 ΔE 0.062
- Dark Navy Blue #00022E ΔE 0.062
- Midnight #03012D ΔE 0.064
Use #031437 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.