#00314F
Closest named color: Prussian Blue (#1D3557). oklch(30.1% 0.072 242.8), rgb(0, 49, 79).
Aa
White text reads best on this color (13.52:1).
About this color
#00314F is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.072 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.033 away. White text reads best on it, at 13.52:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.55:1 |
| White text | 13.52:1 |
Values
| HEX | #00314F |
| RGB | rgb(0, 49, 79) |
| HSL | hsl(203, 100%, 15%) |
| OKLCH | oklch(30.1% 0.072 242.8) |
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 #00314F | 13.52:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #00314F | 1.55:1 | Fails | Lc 0.0 | Not readable |
| #00314F text on white | 13.52:1 | AAA | Lc 99.6 | Preferred for body text |
| #00314F 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
#EFF7FD
oklch(97.2% 0.012 239.9)
-
Step 100
100
#DCECFA
oklch(93.5% 0.026 244.4)
-
Step 200
200
#BFDEF7
oklch(88.6% 0.048 242.5)
-
Step 300
300
#8FC8F4
oklch(81% 0.086 242.3)
-
Step 400
400
#45A9EF
oklch(70.7% 0.138 242.9)
-
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
#00466D
oklch(37.8% 0.09 242.2)
-
Step 950
950 (this color)
#00314F
oklch(30.1% 0.072 242.8)
#00314F 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) | #223250 | 0.032 |
| Deuteranopia (no green cones) | #172B4E | 0.024 |
| Tritanopia (no blue cones) | #00383C | 0.048 |
| Achromatopsia (no color) | #2E2E2E | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00314F
#00314F
oklch(30.1% 0.072 242.8)
- #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 #00314F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.033
- Marine #042E60 ΔE 0.034
- Midnight Green #073B4C ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.046
- Gunmetal #293241 ΔE 0.047
- Oxford Blue #1B263B ΔE 0.048
- Space Cadet #2B2D42 ΔE 0.048
- Marine Blue #01386A ΔE 0.051
Use #00314F 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.