#00345E
Closest named color: Marine (#042E60). oklch(32% 0.09 249.7), rgb(0, 52, 94).
Aa
White text reads best on this color (12.70:1).
About this color
#00345E is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.090 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.019 away. White text reads best on it, at 12.70:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.65:1 |
| White text | 12.70:1 |
Values
| HEX | #00345E |
| RGB | rgb(0, 52, 94) |
| HSL | hsl(207, 100%, 18%) |
| OKLCH | oklch(32% 0.09 249.7) |
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 #00345E | 12.70:1 | AAA | Lc -101.7 | Preferred for body text |
| Black text on #00345E | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #00345E text on white | 12.70:1 | AAA | Lc 98.2 | Preferred for body text |
| #00345E text on black | 1.65:1 | 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
#EFF6FF
oklch(97% 0.014 254.6)
-
Step 100
100
#DBECFE
oklch(93.6% 0.03 249.7)
-
Step 200
200
#BCDDFF
oklch(88.5% 0.059 249.3)
-
Step 300
300
#8EC6FF
oklch(80.9% 0.1 249.6)
-
Step 400
400
#44A5FF
oklch(70.6% 0.16 249.8)
-
Step 500
500
#008CEF
oklch(63% 0.178 249.9)
-
Step 600
600
#0076CA
oklch(55.7% 0.156 249.7)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#00518D
oklch(42.7% 0.12 249.5)
-
Step 900
900
#004377
oklch(37.7% 0.106 249.9)
-
Step 950
950 (this color)
#00345E
oklch(32% 0.09 249.7)
#00345E 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) | #1E3760 | 0.027 |
| Deuteranopia (no green cones) | #0D2F5D | 0.016 |
| Tritanopia (no blue cones) | #003E44 | 0.064 |
| Achromatopsia (no color) | #333333 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00345E
#00345E
oklch(32% 0.09 249.7)
- #492B00
#492B00
oklch(31.9% 0.07 69.3)
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 #00345E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.019
- Marine Blue #01386A ΔE 0.023
- Prussian Blue #1D3557 ΔE 0.026
- Midnight Green #073B4C ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.049
- Gunmetal #293241 ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.062
- Twilight Blue #0A437A ΔE 0.064
Use #00345E 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.