#213369
Closest named color: Marine Blue (#01386A). oklch(33.8% 0.097 267.2), rgb(33, 51, 105).
Aa
White text reads best on this color (12.05:1).
About this color
#213369 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.097 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.026 away. White text reads best on it, at 12.05:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.74:1 |
| White text | 12.05:1 |
Values
| HEX | #213369 |
| RGB | rgb(33, 51, 105) |
| HSL | hsl(225, 52%, 27%) |
| OKLCH | oklch(33.8% 0.097 267.2) |
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 #213369 | 12.05:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #213369 | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #213369 text on white | 12.05:1 | AAA | Lc 97.3 | Preferred for body text |
| #213369 text on black | 1.74:1 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ACC0F1
oklch(81% 0.073 267.4)
-
Step 400
400
#809EEA
oklch(70.8% 0.117 267)
-
Step 500
500
#6183E3
oklch(63% 0.15 267.4)
-
Step 600
600
#496BD1
oklch(55.6% 0.162 267.2)
-
Step 700
700
#3B59B5
oklch(49.2% 0.15 267.1)
-
Step 800
800
#314992
oklch(42.7% 0.124 267.3)
-
Step 900
900 (this color)
#213369
oklch(33.8% 0.097 267.2)
-
Step 950
950
#192544
oklch(27.1% 0.06 266.5)
#213369 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) | #163A6B | 0.021 |
| Deuteranopia (no green cones) | #063368 | 0.024 |
| Tritanopia (no blue cones) | #003F49 | 0.080 |
| Achromatopsia (no color) | #363636 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213369
#213369
oklch(33.8% 0.097 267.2)
- #473400
#473400
oklch(33.7% 0.069 86)
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 #213369, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.026
- Prussian Blue #1D3557 ΔE 0.034
- Marine #042E60 ΔE 0.036
- Twilight Blue #0A437A ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.061
- Midnight Green #073B4C ΔE 0.066
- Space Cadet #2B2D42 ΔE 0.069
- Midnight Blue #191970 ΔE 0.069
Use #213369 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.