#222F5C
Closest named color: Prussian Blue (#1D3557). oklch(31.9% 0.082 269.2), rgb(34, 47, 92).
Aa
White text reads best on this color (12.89:1).
About this color
#222F5C is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.082 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.023 away. White text reads best on it, at 12.89:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.62:1 |
| White text | 12.89:1 |
Values
| HEX | #222F5C |
| RGB | rgb(34, 47, 92) |
| HSL | hsl(227, 46%, 25%) |
| OKLCH | oklch(31.9% 0.082 269.2) |
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 #222F5C | 12.89:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #222F5C | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #222F5C text on white | 12.89:1 | AAA | Lc 98.9 | Preferred for body text |
| #222F5C text on black | 1.62:1 | 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
#E2EAFD
oklch(93.7% 0.027 267.5)
-
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
#7A9AFF
oklch(70.7% 0.152 269)
-
Step 500
500
#5B7CFF
oklch(63.1% 0.198 269.4)
-
Step 600
600
#4461EF
oklch(55.7% 0.215 269.3)
-
Step 700
700
#364FD0
oklch(49.2% 0.2 269.1)
-
Step 800
800
#2D41A8
oklch(42.6% 0.166 269.5)
-
Step 900
900
#273985
oklch(37.7% 0.129 269.2)
-
Step 950
950 (this color)
#222F5C
oklch(31.9% 0.082 269.2)
#222F5C 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) | #1A345E | 0.016 |
| Deuteranopia (no green cones) | #122F5B | 0.019 |
| Tritanopia (no blue cones) | #003941 | 0.072 |
| Achromatopsia (no color) | #323232 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #222F5C
#222F5C
oklch(31.9% 0.082 269.2)
- #403000
#403000
oklch(31.8% 0.065 88.4)
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 #222F5C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.023
- Marine #042E60 ΔE 0.030
- Marine Blue #01386A ΔE 0.039
- Space Cadet #2B2D42 ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.052
- Gunmetal #293241 ΔE 0.053
- Midnight Green #073B4C ΔE 0.057
- Oxford Blue #1B263B ΔE 0.064
Use #222F5C 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.