#216EAB
Closest named color: Mid Blue (#276AB3). oklch(52.3% 0.121 247.2), rgb(33, 110, 171).
Aa
White text reads best on this color (5.40:1).
About this color
#216EAB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.121 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.019 away. White text reads best on it, at 5.40:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.88:1 |
| White text | 5.40:1 |
Values
| HEX | #216EAB |
| RGB | rgb(33, 110, 171) |
| HSL | hsl(207, 68%, 40%) |
| OKLCH | oklch(52.3% 0.121 247.2) |
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 #216EAB | 5.40:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #216EAB | 3.88:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #216EAB text on white | 5.40:1 | AA | Lc 76.6 | Fine for body text |
| #216EAB text on black | 3.88:1 | AA large text | Lc -25.2 | 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 700.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCEE
oklch(88.6% 0.032 246.7)
-
Step 300
300
#A3C5E5
oklch(80.9% 0.058 247)
-
Step 400
400
#70A6D8
oklch(70.7% 0.093 247.4)
-
Step 500
500
#468FCE
oklch(63.1% 0.12 247.2)
-
Step 600
600
#2378BB
oklch(55.7% 0.13 247.3)
-
Step 700
700 (this color)
#216EAB
oklch(52.3% 0.121 247.2)
-
Step 800
800
#155282
oklch(42.6% 0.1 247.3)
-
Step 900
900
#1A4468
oklch(37.6% 0.077 247.6)
-
Step 950
950
#10283D
oklch(26.9% 0.05 247.3)
#216EAB 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) | #5171AE | 0.045 |
| Deuteranopia (no green cones) | #3D64AA | 0.032 |
| Tritanopia (no blue cones) | #007D84 | 0.087 |
| Achromatopsia (no color) | #6A6A6A | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #216EAB
#216EAB
oklch(52.3% 0.121 247.2)
- #955A00
#955A00
oklch(52.2% 0.116 66.9)
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 #216EAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.019
- Flat Blue #3C73A8 ΔE 0.027
- French Blue #436BAD ΔE 0.028
- Muted Blue #3B719F ΔE 0.030
- Ocean Blue #03719C ΔE 0.030
- Nice Blue #107AB0 ΔE 0.034
- Peacock Blue #016795 ΔE 0.042
- Windows Blue #3778BF ΔE 0.044
Use #216EAB 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.