#216CBE
Closest named color: Mid Blue (#276AB3). oklch(53% 0.147 254.1), rgb(33, 108, 190).
Aa
White text reads best on this color (5.31:1).
About this color
#216CBE is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.147 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.017 away. White text reads best on it, at 5.31:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.95:1 |
| White text | 5.31:1 |
Values
| HEX | #216CBE |
| RGB | rgb(33, 108, 190) |
| HSL | hsl(211, 70%, 44%) |
| OKLCH | oklch(53% 0.147 254.1) |
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 #216CBE | 5.31:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #216CBE | 3.95:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #216CBE text on white | 5.31:1 | AA | Lc 76.0 | Fine for body text |
| #216CBE text on black | 3.95:1 | AA large text | Lc -25.8 | Dividers and decoration only |
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 600.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF2
oklch(88.5% 0.037 254.6)
-
Step 300
300
#A4C4EB
oklch(81% 0.065 253.6)
-
Step 400
400
#71A4E1
oklch(70.7% 0.105 253.6)
-
Step 500
500
#4A8BD9
oklch(63% 0.136 254.3)
-
Step 600
600 (this color)
#216CBE
oklch(53% 0.147 254.1)
-
Step 700
700
#1C61AC
oklch(49.2% 0.137 254)
-
Step 800
800
#1A4F8B
oklch(42.6% 0.114 254.3)
-
Step 900
900
#1C426F
oklch(37.6% 0.089 254.4)
-
Step 950
950
#112741
oklch(26.9% 0.056 253.9)
#216CBE 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) | #4273C1 | 0.035 |
| Deuteranopia (no green cones) | #2465BC | 0.019 |
| Tritanopia (no blue cones) | #00808C | 0.110 |
| Achromatopsia (no color) | #6B6B6B | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #216CBE
#216CBE
oklch(53% 0.147 254.1)
- #926000
#926000
oklch(53% 0.112 73.8)
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 #216CBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.017
- French Blue #436BAD ΔE 0.036
- Windows Blue #3778BF ΔE 0.039
- Flat Blue #3C73A8 ΔE 0.048
- Nice Blue #107AB0 ΔE 0.049
- Muted Blue #3B719F ΔE 0.057
- Ocean Blue #03719C ΔE 0.061
- Royal Blue #4169E1 ΔE 0.062
Use #216CBE 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.