#03314E
Closest named color: Prussian Blue (#1D3557). oklch(30.1% 0.07 243), rgb(3, 49, 78).
Aa
White text reads best on this color (13.52:1).
About this color
#03314E is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.070 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.032 away. White text reads best on it, at 13.52:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.55:1 |
| White text | 13.52:1 |
Values
| HEX | #03314E |
| RGB | rgb(3, 49, 78) |
| HSL | hsl(203, 93%, 16%) |
| OKLCH | oklch(30.1% 0.07 243) |
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 #03314E | 13.52:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #03314E | 1.55:1 | Fails | Lc 0.0 | Not readable |
| #03314E text on white | 13.52:1 | AAA | Lc 99.6 | Preferred for body text |
| #03314E text on black | 1.55:1 | 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
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DDECF9
oklch(93.6% 0.024 244.1)
-
Step 200
200
#C0DDF6
oklch(88.4% 0.046 244.3)
-
Step 300
300
#92C7F2
oklch(80.8% 0.082 243.5)
-
Step 400
400
#4BA9EC
oklch(70.7% 0.132 242.9)
-
Step 500
500
#0091DD
oklch(63.1% 0.152 242.9)
-
Step 600
600
#007ABB
oklch(55.7% 0.134 242.9)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#00466E
oklch(37.8% 0.091 242.8)
-
Step 950
950 (this color)
#03314E
oklch(30.1% 0.07 243)
#03314E 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) | #23324F | 0.031 |
| Deuteranopia (no green cones) | #182B4D | 0.023 |
| Tritanopia (no blue cones) | #00383B | 0.048 |
| Achromatopsia (no color) | #2E2E2E | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03314E
#03314E
oklch(30.1% 0.07 243)
- #462500
#462500
oklch(30.2% 0.069 62.7)
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 #03314E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.032
- Marine #042E60 ΔE 0.036
- Midnight Green #073B4C ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.045
- Gunmetal #293241 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.046
- Oxford Blue #1B263B ΔE 0.046
- Marine Blue #01386A ΔE 0.052
Use #03314E 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.