#00225A
Closest named color: Marine (#042E60). oklch(27.1% 0.108 259.6), rgb(0, 34, 90).
Aa
White text reads best on this color (15.25:1).
About this color
#00225A is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.108 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.038 away. White text reads best on it, at 15.25:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.37:1 |
| White text | 15.25:1 |
Values
| HEX | #00225A |
| RGB | rgb(0, 34, 90) |
| HSL | hsl(217, 100%, 18%) |
| OKLCH | oklch(27.1% 0.108 259.6) |
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 #00225A | 15.25:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #00225A | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #00225A text on white | 15.25:1 | AAA | Lc 101.6 | Preferred for body text |
| #00225A text on black | 1.37:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFF
oklch(93.6% 0.031 258.9)
-
Step 200
200
#C4DBFF
oklch(88.6% 0.056 259.3)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#65A0FF
oklch(70.8% 0.153 259.5)
-
Step 500
500
#3684FF
oklch(63.2% 0.199 259.4)
-
Step 600
600
#0068F2
oklch(55.6% 0.223 259.6)
-
Step 700
700
#0057CD
oklch(49.1% 0.196 259.6)
-
Step 800
800
#0047AA
oklch(42.8% 0.171 259.6)
-
Step 900
900
#003B8F
oklch(37.8% 0.15 259.5)
-
Step 950
950 (this color)
#00225A
oklch(27.1% 0.108 259.6)
#00225A 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) | #002A5C | 0.024 |
| Deuteranopia (no green cones) | #002259 | 0.002 |
| Tritanopia (no blue cones) | #00303A | 0.081 |
| Achromatopsia (no color) | #252525 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00225A
#00225A
oklch(27.1% 0.108 259.6)
- #352300
#352300
oklch(27.1% 0.056 79.9)
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 #00225A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.038
- Midnight Blue #191970 ΔE 0.049
- Darkblue #030764 ΔE 0.056
- Dark Royal Blue #02066F ΔE 0.061
- Navy Blue #001146 ΔE 0.061
- Dark Indigo #1F0954 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.066
- Deep Blue #040273 ΔE 0.067
Use #00225A 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.