#212E4F
Closest named color: Prussian Blue (#1D3557). oklch(30.7% 0.062 266.5), rgb(33, 46, 79).
Aa
White text reads best on this color (13.38:1).
About this color
#212E4F is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.062 and its hue 267°. 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 13.38:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.56:1 |
| White text | 13.38:1 |
Values
| HEX | #212E4F |
| RGB | rgb(33, 46, 79) |
| HSL | hsl(223, 41%, 22%) |
| OKLCH | oklch(30.7% 0.062 266.5) |
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 #212E4F | 13.38:1 | AAA | Lc -102.9 | Preferred for body text |
| Black text on #212E4F | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #212E4F text on white | 13.38:1 | AAA | Lc 99.7 | Preferred for body text |
| #212E4F text on black | 1.56:1 | 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
#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
#ABC0F1
oklch(80.9% 0.073 266.7)
-
Step 400
400
#7F9EEA
oklch(70.7% 0.117 266.5)
-
Step 500
500
#5F84E4
oklch(63.1% 0.15 266.3)
-
Step 600
600
#476BD2
oklch(55.6% 0.164 266.6)
-
Step 700
700
#3959B6
oklch(49.2% 0.152 266.5)
-
Step 800
800
#2F4993
oklch(42.7% 0.126 266.5)
-
Step 900
900
#293E75
oklch(37.7% 0.098 266.1)
-
Step 950
950 (this color)
#212E4F
oklch(30.7% 0.062 266.5)
#212E4F 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) | #213150 | 0.010 |
| Deuteranopia (no green cones) | #1B2D4E | 0.009 |
| Tritanopia (no blue cones) | #0A353A | 0.056 |
| Achromatopsia (no color) | #2F2F2F | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212E4F
#212E4F
oklch(30.7% 0.062 266.5)
- #3D2D01
#3D2D01
oklch(30.7% 0.062 87)
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 #212E4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.024
- Space Cadet #2B2D42 ΔE 0.027
- Gunmetal #293241 ΔE 0.034
- Marine #042E60 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.044
- Midnight Green #073B4C ΔE 0.048
- Marine Blue #01386A ΔE 0.055
Use #212E4F 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.