#212F63
Closest named color: Marine (#042E60). oklch(32.4% 0.093 269.3), rgb(33, 47, 99).
Aa
White text reads best on this color (12.71:1).
About this color
#212F63 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.093 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.029 away. White text reads best on it, at 12.71:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.65:1 |
| White text | 12.71:1 |
Values
| HEX | #212F63 |
| RGB | rgb(33, 47, 99) |
| HSL | hsl(227, 50%, 26%) |
| OKLCH | oklch(32.4% 0.093 269.3) |
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 #212F63 | 12.71:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #212F63 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #212F63 text on white | 12.71:1 | AAA | Lc 98.6 | Preferred for body text |
| #212F63 text on black | 1.65:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CFD9F4
oklch(88.6% 0.039 269.4)
-
Step 300
300
#AEBFEF
oklch(80.8% 0.071 269.6)
-
Step 400
400
#849DE7
oklch(70.7% 0.112 269.2)
-
Step 500
500
#6783E0
oklch(63.2% 0.144 269.4)
-
Step 600
600
#4F6ACD
oklch(55.5% 0.156 269.3)
-
Step 700
700
#4058B2
oklch(49.1% 0.145 269.2)
-
Step 800
800
#354990
oklch(42.8% 0.119 269.1)
-
Step 900
900 (this color)
#212F63
oklch(32.4% 0.093 269.3)
-
Step 950
950
#1B2443
oklch(26.9% 0.059 269.9)
#212F63 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) | #133665 | 0.023 |
| Deuteranopia (no green cones) | #053062 | 0.026 |
| Tritanopia (no blue cones) | #003B44 | 0.079 |
| Achromatopsia (no color) | #333333 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212F63
#212F63
oklch(32.4% 0.093 269.3)
- #413200
#413200
oklch(32.5% 0.066 90.4)
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 #212F63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.029
- Prussian Blue #1D3557 ΔE 0.031
- Marine Blue #01386A ΔE 0.034
- Space Cadet #2B2D42 ΔE 0.060
- Dark Blue Grey #1F3B4D ΔE 0.060
- Midnight Blue #191970 ΔE 0.062
- Gunmetal #293241 ΔE 0.065
- Midnight Green #073B4C ΔE 0.065
Use #212F63 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.