#222D73
Closest named color: Marine Blue (#01386A). oklch(33.4% 0.12 271.5), rgb(34, 45, 115).
Aa
White text reads best on this color (12.41:1).
About this color
#222D73 is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.120 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.042 away. White text reads best on it, at 12.41:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.69:1 |
| White text | 12.41:1 |
Values
| HEX | #222D73 |
| RGB | rgb(34, 45, 115) |
| HSL | hsl(232, 54%, 29%) |
| OKLCH | oklch(33.4% 0.12 271.5) |
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 #222D73 | 12.41:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #222D73 | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #222D73 text on white | 12.41:1 | AAA | Lc 97.9 | Preferred for body text |
| #222D73 text on black | 1.69:1 | 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 900.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ABBEFC
oklch(80.9% 0.09 271.1)
-
Step 400
400
#8199FA
oklch(70.7% 0.144 271.8)
-
Step 500
500
#637CF7
oklch(63% 0.185 271.5)
-
Step 600
600
#4D62E6
oklch(55.6% 0.2 271.5)
-
Step 700
700
#3F50C8
oklch(49.2% 0.186 271.6)
-
Step 800
800
#3342A2
oklch(42.7% 0.155 271.4)
-
Step 900
900 (this color)
#222D73
oklch(33.4% 0.12 271.5)
-
Step 950
950
#1A224B
oklch(27% 0.076 272.1)
#222D73 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) | #003875 | 0.036 |
| Deuteranopia (no green cones) | #003172 | 0.029 |
| Tritanopia (no blue cones) | #003E4B | 0.098 |
| Achromatopsia (no color) | #343434 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #222D73
#222D73
oklch(33.4% 0.12 271.5)
- #433500
#433500
oklch(33.5% 0.068 92.5)
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 #222D73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.042
- Marine #042E60 ΔE 0.045
- Midnight Blue #191970 ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.057
- Twilight Blue #0A437A ΔE 0.061
- Royal #0C1793 ΔE 0.074
- Cobalt #1E488F ΔE 0.084
- Dark Blue Grey #1F3B4D ΔE 0.085
Use #222D73 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.