#222E5B
Closest named color: Prussian Blue (#1D3557). oklch(31.6% 0.082 270), rgb(34, 46, 91).
Aa
White text reads best on this color (13.04:1).
About this color
#222E5B is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.082 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.024 away. White text reads best on it, at 13.04:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.60:1 |
| White text | 13.04:1 |
Values
| HEX | #222E5B |
| RGB | rgb(34, 46, 91) |
| HSL | hsl(227, 46%, 25%) |
| OKLCH | oklch(31.6% 0.082 270) |
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 #222E5B | 13.04:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #222E5B | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #222E5B text on white | 13.04:1 | AAA | Lc 99.1 | Preferred for body text |
| #222E5B text on black | 1.60:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FD
oklch(93.5% 0.028 270.4)
-
Step 200
200
#CBD8FE
oklch(88.5% 0.054 270.4)
-
Step 300
300
#A8BEFF
oklch(80.9% 0.096 269.8)
-
Step 400
400
#7C99FF
oklch(70.6% 0.153 270.2)
-
Step 500
500
#5D7CFF
oklch(63.2% 0.197 269.9)
-
Step 600
600
#4660EE
oklch(55.5% 0.214 269.9)
-
Step 700
700
#394ED0
oklch(49.2% 0.2 270.1)
-
Step 800
800
#2E41A8
oklch(42.7% 0.166 269.8)
-
Step 900
900
#283985
oklch(37.8% 0.129 269.7)
-
Step 950
950 (this color)
#222E5B
oklch(31.6% 0.082 270)
#222E5B 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) | #19335D | 0.017 |
| Deuteranopia (no green cones) | #112E5A | 0.020 |
| Tritanopia (no blue cones) | #003840 | 0.072 |
| Achromatopsia (no color) | #313131 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #222E5B
#222E5B
oklch(31.6% 0.082 270)
- #3F3000
#3F3000
oklch(31.7% 0.065 89.7)
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 #222E5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.024
- Marine #042E60 ΔE 0.029
- Marine Blue #01386A ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.046
- Gunmetal #293241 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.054
- Midnight Green #073B4C ΔE 0.058
- Oxford Blue #1B263B ΔE 0.062
Use #222E5B 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.