#03133E
Closest named color: Navy Blue (#001146). oklch(20.7% 0.086 263.3), rgb(3, 19, 62).
Aa
White text reads best on this color (18.00:1).
About this color
#03133E is a very dark, moderately saturated blue. In OKLCH its lightness is 21%, its chroma 0.086 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.017 away. White text reads best on it, at 18.00:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.16:1 |
| White text | 18.00:1 |
Values
| HEX | #03133E |
| RGB | rgb(3, 19, 62) |
| HSL | hsl(224, 91%, 13%) |
| OKLCH | oklch(20.7% 0.086 263.3) |
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 #03133E | 18.00:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #03133E | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #03133E text on white | 18.00:1 | AAA | Lc 104.4 | Preferred for body text |
| #03133E text on black | 1.16:1 | 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
#E0EAFE
oklch(93.6% 0.029 264.4)
-
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
#6E9DFF
oklch(70.6% 0.153 263.6)
-
Step 500
500
#4781FF
oklch(63.2% 0.197 263.3)
-
Step 600
600
#2664F4
oklch(55.6% 0.225 263.3)
-
Step 700
700
#1A52D5
oklch(49.2% 0.209 263.3)
-
Step 800
800
#1744AC
oklch(42.7% 0.174 263.3)
-
Step 900
900
#183B88
oklch(37.7% 0.135 263.1)
-
Step 950
950 (this color)
#03133E
oklch(20.7% 0.086 263.3)
#03133E 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) | #00193F | 0.018 |
| Deuteranopia (no green cones) | #00143D | 0.005 |
| Tritanopia (no blue cones) | #001E26 | 0.065 |
| Achromatopsia (no color) | #171717 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03133E
#03133E
oklch(20.7% 0.086 263.3)
- #211600
#211600
oklch(20.9% 0.043 84.6)
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 #03133E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.017
- Night Blue #040348 ΔE 0.039
- Dark Navy #000435 ΔE 0.049
- Rich Black #0D1B2A ΔE 0.052
- Very Dark Blue #000133 ΔE 0.061
- Dark Indigo #1F0954 ΔE 0.062
- Dark Navy Blue #00022E ΔE 0.065
- Midnight #03012D ΔE 0.066
Use #03133E 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.