#216EB8
Closest named color: Mid Blue (#276AB3). oklch(53.1% 0.137 251.6), rgb(33, 110, 184).
Aa
White text reads best on this color (5.26:1).
About this color
#216EB8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.137 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.012 away. White text reads best on it, at 5.26:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.98:1 |
| White text | 5.26:1 |
Values
| HEX | #216EB8 |
| RGB | rgb(33, 110, 184) |
| HSL | hsl(209, 70%, 43%) |
| OKLCH | oklch(53.1% 0.137 251.6) |
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 #216EB8 | 5.26:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #216EB8 | 3.98:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #216EB8 text on white | 5.26:1 | AA | Lc 75.7 | Fine for body text |
| #216EB8 text on black | 3.98:1 | AA large text | Lc -26.0 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A4C4E8
oklch(80.9% 0.062 251.6)
-
Step 400
400
#72A5DD
oklch(70.8% 0.099 251.6)
-
Step 500
500
#4A8DD3
oklch(63.1% 0.126 251.4)
-
Step 600
600 (this color)
#216EB8
oklch(53.1% 0.137 251.6)
-
Step 700
700
#1C62A6
oklch(49% 0.128 251.8)
-
Step 800
800
#1A5186
oklch(42.8% 0.105 251.1)
-
Step 900
900
#1C436C
oklch(37.7% 0.083 251.9)
-
Step 950
950
#12283F
oklch(27.1% 0.051 251.2)
#216EB8 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) | #4A73BB | 0.039 |
| Deuteranopia (no green cones) | #3166B7 | 0.022 |
| Tritanopia (no blue cones) | #00808A | 0.102 |
| Achromatopsia (no color) | #6C6C6C | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #216EB8
#216EB8
oklch(53.1% 0.137 251.6)
- #945F00
#945F00
oklch(53.1% 0.114 71.7)
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 #216EB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.012
- French Blue #436BAD ΔE 0.030
- Windows Blue #3778BF ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.037
- Nice Blue #107AB0 ΔE 0.039
- Muted Blue #3B719F ΔE 0.046
- Ocean Blue #03719C ΔE 0.049
- Peacock Blue #016795 ΔE 0.060
Use #216EB8 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.