#216C8F
Closest named color: Ocean Blue (#03719C). oklch(50.2% 0.09 233.2), rgb(33, 108, 143).
Aa
White text reads best on this color (5.82:1).
About this color
#216C8F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.090 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.023 away. White text reads best on it, at 5.82:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.60:1 |
| White text | 5.82:1 |
Values
| HEX | #216C8F |
| RGB | rgb(33, 108, 143) |
| HSL | hsl(199, 63%, 35%) |
| OKLCH | oklch(50.2% 0.09 233.2) |
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 #216C8F | 5.82:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #216C8F | 3.60:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #216C8F text on white | 5.82:1 | AA | Lc 78.8 | Fine for body text |
| #216C8F text on black | 3.60:1 | AA large text | Lc -23.0 | 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 700.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CADCE7
oklch(88.4% 0.025 234.5)
-
Step 300
300
#A6C6D9
oklch(80.9% 0.044 234.1)
-
Step 400
400
#74A8C5
oklch(70.6% 0.069 233.5)
-
Step 500
500
#4D93B7
oklch(63.2% 0.089 233)
-
Step 600
600
#2B7CA3
oklch(55.5% 0.097 233.6)
-
Step 700
700 (this color)
#216C8F
oklch(50.2% 0.09 233.2)
-
Step 800
800
#1B5571
oklch(42.6% 0.075 233.6)
-
Step 900
900
#1D475C
oklch(37.8% 0.059 233.1)
-
Step 950
950
#122936
oklch(26.9% 0.038 235.3)
#216C8F 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) | #5B6B91 | 0.058 |
| Deuteranopia (no green cones) | #4C608E | 0.049 |
| Tritanopia (no blue cones) | #007578 | 0.054 |
| Achromatopsia (no color) | #656565 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #216C8F
#216C8F
oklch(50.2% 0.09 233.2)
- #8C542F
#8C542F
oklch(50.2% 0.091 52.7)
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 #216C8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.023
- Sea Blue #047495 ΔE 0.024
- Peacock Blue #016795 ΔE 0.024
- Denim #3B638C ΔE 0.030
- Muted Blue #3B719F ΔE 0.037
- Ocean #017B92 ΔE 0.044
- Metallic Blue #4F738E ΔE 0.049
- Flat Blue #3C73A8 ΔE 0.050
Use #216C8F 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.